【题目】One type of fish is named salmon(大马哈鱼). There are many different kinds of salmon, but almost all of them mate(交配) in a very strange way. They are born in small, freshwater rivers. They live in the river for a year, and then swim downstream to a bigger river and eventually to the ocean very quickly. While they live in the ocean, salmon are silver coloured.

After several years at sea, the salmon grow very long and heavy. Then, as if by magic, they all begin to swim home. Each salmon somehow remembers where it was born and the very same area in the small river.

It is a long, difficult journey home. Once the salmon enter fresh, they stop eating. They also change colours. Some salmon turn red, other brown and grey, and some turn pink. Some salmon grow a large bulge on their back, called a hump. These salmon fight to swim upstream against the current of sometimes very to avoid bears, birds, and fishermen

Finally, the salmon that survive mate in the same river in which they were born. Then, after all that work, they die! These salmon still play an important role. Their dead bodies help to provide nutrition(营养) to the animals that live in and around the river When their eggs hatch, the cycle will start again.

【1】Which of the following do salmon NOT do when they reenter fresh water?

A. They change colours.

B. They stop eating.

C. They grow bulges on their backs.

D. They grow teeth.

【2】Inferring from the passage, why do salmon eat a lot while they are in the ocean? Because_______

A. they need to have enough energy to return home

B. they never stop swimming

C. they are afraid of bears

D. the different water makes them hungry

【3】Salmon return to fresh water in order to _______.

A. mate

B. provide nutrition to other animals

C. mate and provide nutrition to other animals

D. make a difficult journey

【题目】The greatest scientific breakthroughs of 2014 have affected all aspects of modern life, from medicine, to space exploration, to the future of renewable technologies. Scientists all over the globe are publishing their findings and treating patients with new medicines and techniques that are changing everyday life for the human race, and adding to our vast banks of scientific knowledge.

Irish teens make a breakthrough in crop yields(产量)

16-year-old Ciara Judge, Emer Hickey, and Sophie Healy-Thow won the Google Science Fair2014, with their project “Natural Bacteria Fighting World Hunger”.

While learning about the food shortage in Africa, the three teens got thinking about how they could help. What they found may change the future of worldwide food production.. They experimented and were able to reduce germination(发芽)time by 50%and increase plants’ yield by up to 74%.

This could create the possibility of increased crop yields and reducing crop loss due to bad weather.

Cancer is cured?

In May 2014, the Mayo Clinic published a study in which they treated a 50-year-old female patient’s blood cancer with the measlesvaccine(麻疹疫苗).After receiving the vaccine, Stacy Erholtz’s body is completely free of cancer.

Stephen Russell, who led the research, said, “It’s a landmark. We’ve known for a long time that we can introduce a virus into the blood and destroy cancer in mice. Nobody’s shown that you can do that in people before.” The measles vaccine will not work for all types of cancer, but is an unbelievable step forward.

Water found on Saturn’s moon Enceladus

In April, scientists announced that NASA’s Cassini spacecraft discovered a body of water on Enceladus, a moon of Saturn(土星). Enceladus is an icy moon about 300 miles in diameter (直径).and its mysterious body of water appears to be 5 miles deep, around the size of Lake Superior.

Scientists have also discovered that the body of water features a rock is a possible sign of conditions good for the development of life.

【1】The text is mainly about _______.

A. the new findings in medicine

B. the greatest scientists in 2014

C. the new techniques in space exploration

D. the greatest scientific breakthroughs of 2014

【2】 What’s the aim of the three Irish teens’ Project?

A. To attract Google’s attention.

B. To do research on Africa’s soil.

C. To solve the problem of world hunger..

D. To understand different plants’ germination time.

【3】 What can be inferred about the Mayo Clinic’s study?

A. Blood cancer is very is very easy to cure.

B. All kinds of cancer will be cured soon.

C. Medical experiments on people are not allowed.

D. The research is a breakthrough in cancer treatment.

【4】What can we infer from the last paragraph?

A. Enceladus is a warm moon

B. Enceladus may be suitable for life.

C. Enceladus is as big as Lake Superior.

D. Enceladus has several rocky sea floors.

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