We know that many animals do not stay in one place. Birds, fish and other animals move from one place to another at a certain time. They move for different reasons: most of them move to find food more easily, but others move to get away from places that are too crowded.

When cold weather comes, many birds move to warmer places to find food. Some fishes give birth in warm water and move to cold water to feed. The most famous migration(迁移) is probably the migration of the fish, which is called the “salmon”. This fish is born in fresh water but it travels many miles to salt water. There it spends most of its life. When it is old, it returns to its birthplace in fresh water. Then it gives birth and dies there. In northern Europe, there is a kind of mice that leave their mountain homes when they become too crowded. They move down to the low land. Sometimes they move all the way to the seaside, and many of them are killed by falling into the sea.

Recently, scientists have studied the migration of a kind of lobsters(龙虾). Every year, when the season of bad weather arrives, lobsters get into a long line and start to walk across the floor of the ocean. Nobody knows why they do this, and nobody knows where they go.

So, sometimes we know why humans and animals move from one place to another, but at other times we don’t. Maybe living things just like to travel.

1. Most animals move from one place to another at a certain time to ____.

A give birth            B enjoy a warm climate

C find food more easily  D find beautiful places

2. The fish called “salmon” spends most of its time in ____.

A salt water  B rivers  C fresh water  D its birthplace

3. A kind of mice in northern Europe move when ____.

A they give birth               B the weather becomes bad 

C there are too many of them in one place  D they haven’t enough food

4. What is the main idea of the passage?

A Animals move in order to find food more easily

B The migration of the fish called “salmon” is the most famous migration

C Living things move from one place to another because they like to travel

D Sometimes we know why and how living things move from one place to another, but sometimes we don’t.

We know that many animals do not stay in one place. Birds, fish and other animals move from one place to another at a certain time. They move for different reasons most of them move to find food more easily, but others move to get away from places that are too crowded. When cold weather comes, many birds move to warmer places to find food. Some fishes give birth in warm water and move to cold water to feed. The most famous migration（迁移）is probably the migration of the fish, which is called “salmon”. This fish is born in fresh water but it travels many miles to salt water. There it spends its life. When it is old, it returns to its birthplace in fresh water. Then it gives birth and dies there. In northern Europe, there is a kind of mice. They leave their mountain homes when they become too crowded. They move down to the low land. Sometimes they move all the way to the seaside, and many of them are killed when they fall into the sea.

    Recently, scientists have studied the migration of a kind of lobsters（龙虾）. Every year, when the season of bad weather arrives, the lobsters get into a long line and start to walk across the floor of the ocean. Nobody knows why they do this, and nobody knows where they go. So, sometimes we know why humans and animals move from one place to another, but at other times we don’t. Maybe living things just like to travel.    

Most animals move from one place to another at a certain time to __________ .

A. give birth              B. enjoy warmer weather  

C. find food more easily     D. find beautiful places

The fish called “salmon” spends a long life in __________ .

A. salt water         B. rivers          C. fresh water       D. its birthplace

The mice in northern Europe move when __________ .

   A. they give birth                   B. the weather is bad

  C. the place gets too crowded         D. they haven’t enough food

The lobsters move __________ .

   A. to the fresh water              B. to the sea floor

   C. at a certain time               D. to find more food

What is the main idea of the passage?

   A. Animals move in order to find food more easily.

 B. The migration of the fish called “salmon” is the most famous migration.

   C. Living things move from one place to another because they like to travel.

D. Sometimes we know why and how living things move from one place to another, but sometimes we don’t.

Directions: Read the following passage．Answer the questions according to the information

given in the passage.

Why should you keep exercising even when cold temperatures make you want to hide under the covers? With the temperatures dropping at this time of year, many of us tend to hibernate (冬眠) inside our homes. But, hibernating is for bears. As humans it’s important to stay active through all four seasons. Yet, a poll of 5,000 people found that 30 percent get no exercise at all during the winter months.

Just because it is cold outside it is no excuse not to exercise. There are many exercise choices one can choose to take part in regardless of the cold weather. Depending on your location and likes, you can choose to exercise inside or outside.

All that is required for winter-time exercise is some planning and the following of some safety tips. If you prefer to exercise outside, keep the following tips in mind.

Get warm first. A proper warm-up is critical. Cold temperatures can make your muscles tight and therefore they are easier to be injured. So, it’s important to get them warm-up before intense (激烈的) physical activity.

No sweat. Don’t assume that you have to sweat in order to get a good workout. You should avoid sweating that causes the clothing layer closest to your skin to get wet and cause you to be cold.

Don’t undress when you get inside. While you may want to immediately remove your layers when returning inside, you should give your body time to adjust.

Drink up. It’s just as important to stay hydrated (含水的) when exercising in winter as it is in summer, even though you might not feel as thirsty.

Be seen. If possible, it’s best to exercise outdoors during daylight areas. If you exercise outdoors when it is dark, wear reflective (反光的) materials to ensure that you can be seen.

By staying fit during winter, you’ll be able to avoid gaining weight and losing strength caused from inactivity.

1. Why is it important to get your muscles warmed-up before intense physical activity? (no more than 16 words)

_____________________________________________________________________________

2.What are needed for exercising in winter? (no more than 6 words)

_____________________________________________________________________________

3.What are the advantages of staying fit during winter? (no more than 9 words)

_____________________________________________________________________________

4.What’s the main idea of the text? (no more than 4 words)

_____________________________________________________________________________

What doomed the Titanic is well known, at least in outline. On a moonless night of April 15, 1912, the ship hit an iceberg in the North Atlantic ,with 1,500 lives lost.
A century later many people presented new theories to explain the real reason for the disaster. Now two new studies argue that rare states of nature played major roles in the disaster.
The first says Earth’s nearness to the Moon and the Sun — a proximity not matched in more than 1,000 years — resulted in record tides that help explain why the Titanic met with so much ice, including the fatal iceberg.
Recently, a team of researchers found an apparent explanation in the heavens. They discovered that Earth had come unusually close to the Sun and Moon that winter, enhancing their gravitational pulls on the ocean and producing record tides. The rare orbits took place between December 1911 and February 1912 — about two months before the disaster came about. The researchers suggest that the high tides refloated masses of icebergs traditionally stuck along the coastlines of Labrador and Newfoundland and sent them adrift into the North Atlantic shipping lanes.
And a second, put forward by a Titanic historian from Britain, contends that the icy waters created ideal conditions for an unusual type of mirage(海市蜃楼) that hid icebergs from lookouts whose duty was to watch carefully for  danger ahead and confused a nearby ship as to the liner’s identity, delaying rescue efforts for hours.
Most people know mirages as natural phenomena caused when hot air near the Earth’s surface bends light rays upward. In a desert, the effect prompts lost travelers to mistake patches of blue sky for pools of water. But another kind of mirage occurs when cold air bends light rays downward. In that case, observers can see objects and settings far over the horizon. The images often undergo quick distortions — not unlike the wavy reflections in a funhouse mirror.
Now, scholars of the Titanic are debating these new theories. Some have different opinions on it. Over all, though, many experts are applauding the fresh perspectives.  (words:353)
【小题1】The underlined word "It" in the title probably refers to _______.

The Iceberg Was Only Part ofIt

What doomed the Titanic is well known, at least in outline. On a moonless night of April 15, 1912, the ship hit an iceberg in the North Atlantic ,with 1,500 lives lost.

A century later many people presented new theories to explain the real reason for the disaster. Now two new studies argue that rare states of nature played major roles in the disaster.

The first says Earth’s nearness to the Moon and the Sun — a proximity not matched in more than 1,000 years — resulted in record tides that help explain why the Titanic met with so much ice, including the fatal iceberg.

Recently, a team of researchers found an apparent explanation in the heavens. They discovered that Earth had come unusually close to the Sun and Moon that winter, enhancing their gravitational pulls on the ocean and producing record tides. The rare orbits took place between December 1911 and February 1912 — about two months before the disaster came about. The researchers suggest that the high tides refloated masses of icebergs traditionally stuck along the coastlines of Labrador and Newfoundland and sent them adrift into the North Atlantic shipping lanes.

And a second, put forward by a Titanic historian from Britain, contends that the icy waters created ideal conditions for an unusual type of mirage(海市蜃楼) that hid icebergs from lookouts whose duty was to watch carefully for danger ahead and confused a nearby ship as to the liner’s identity, delaying rescue efforts for hours.

Most people know mirages as natural phenomena caused when hot air near the Earth’s surface bends light rays upward. In a desert, the effect prompts lost travelers to mistake patches of blue sky for pools of water. But another kind of mirage occurs when cold air bends light rays downward. In that case, observers can see objects and settings far over the horizon. The images often undergo quick distortions — not unlike the wavy reflections in a funhouse mirror.

Now, scholars of the Titanic are debating these new theories. Some have different opinions on it. Over all, though, many experts are applauding the fresh perspectives. 

1.The underlined word "It" in the title probably refers to _______.

2.According to Theory First, what was the right chain of causes leading to the Titanic’s disaster?

① record tides’ forming and icebergs’ being refloated

② icebergs’ being drifted into the North Atlantic shipping lanes

③ the Earth’s strange closing to the Sun and the Moon

④ increasing of the gravitational force on the ocean

3.According to Theory Second, the disaster happened to the Titanic mainly because______.

4.What is the chief function of the sixth paragraph?

5.This passage is organized generally in the pattern of________.