This problem is too difficult. students can work it out. [ ] A．A fewB．Few C．A littleD．Little 题目和参考答案——青夏教育精英家教网—

题目内容

This problem is too difficult. ________ students can work it out.

[　　]

A．A few

B．Few

C．A little

D．Little

答案：B

练习册系列答案

一线名师口算应用题天天练一本全系列答案

A．so; that few of us can do

B．so; that few of us can do it

C．too; for anyone of us to do

D．too; for anyone of us to do it

Plant scientists consider them as fruit. Most other people think of them as vegetables. Whatever you call tomatoes, there are many different kinds of this popular and healthy food.
There are two groups of the plants. Small tomato plants grow to about one meter. They can be planted rather close together. Some short kinds do not require special care and are often gotten crop by machines. Large tomato plants can grow over two meters tall. They also produce larger fruits.
People who grow only a few plants can place wire cages around each one. The cage can be made of wire fence material. The cage helps the plant grow taller and produce a better crop.
Tomatoes often need extra calcium (Ca), or the fruits may be ruined. Add lime to the soil can solve this problem. Dry lands may also ruin the fruits. Tomatoes need water regularly. The soil should never dry out completely. Dried grass or leaves placed around the plant can help hold water in the soil and stop the growth of unwanted plants.
Tomatoes are native to South America. The tomato is a member of the potato family. The leaves of the plant are poisonous, like the leaves of its relatives. Before the 18th century, people grew tomatoes only as pretty plants. They called the bright red fruit a “love apple”, but would not eat it.
【小题1】Which of the following is right about the small tomato plants?
A. They can grow to about 2 meters.
B. They can’t be planted close together.
C. Some of them don’t require special care.
【小题2】People place wire cages around the plant in order to ___________.
A. protect the plant from being taken by others.
B. help the plant grow taller and produce a better crop
C. keep the plant from being eaten by animals
【小题3】The underlined word “ruin” probably means “___________”.
A. grow     B. destroy      C. stop
【小题4】 People often give tomatoes extra calcium by ___________.
A. adding lime to the soil          B. watering the plant regularly
C. putting dried grass around the plant
【小题5】What can we learn from the passage?
A. Tomatoes are native to North America.
B. The leaves of the plant can also be eaten.
C. Americans began to eat tomatoes from the 18th century.

Sleep is very important. A person who does not sleep dies faster than a person who does not eat. We spend about a third()of our lives in sleep. That’s about 121 days a year!
How much sleep do we need? We are all different. A baby needs 16 hours of sleep every day. Children of 6 to 12 years of age need an average(平均)of 10 to 12 hours of sleep. Teenagers need 9 to 10 hours of sleep. An adult needs an average of 7 to 8 hours a day. There are some people who need only 3 hours of sleep; others need 10 hours of sleep. After the age of 50, the average sleep time goes down to 6.5 hours a day. We need less sleep as we get older.
About one in three Americans has a problem with sleep. Many of these people cannot fall asleep. The name for this problem is insomnia. Some people say, “I didn’t sleep all night.” But that’s not really true. They may sleep lightly and wake up several times. In the morning, they only remember the time they were awake, so they think they were awake all night.
This is not a new problem. Many famous people in history had insomnia. Some of these people had special ideas to make themselves sleep. Benjamin Franklin had four beds. He moved from one to the other to fall asleep. Mark Twain had a different way. He lay on his side across the end of the bed!
【小题1】How long do we spend in sleep a year?

A．Less than three months.	B．More than five months.
C．About four months.	D．Less than 2000 hours.

【小题2】If you are thirteen years old, you need at least __________ hours of sleep.

【小题3】What does the underlined word “insomnia” mean in this passage?

A．No sleep.

B．Fast sleep.

C．Slow sleep.

D．Sleep with many dreams.

【小题4】Which of the following is TRUE according to the passage?

A．We will die soon if we don’t sleep well.

B．The older we get, the less sleep we need.

C．We can tell a person’s age from his sleep time.

D．Famous people move from one bed to the other to fall asleep.

【小题5】Which would be the best title for this passage?

A．Sleep less	B．Go to sleep
C．Age and sleep time	D．Famous people and sleep

How much sleep do we need? We are all different. Some people need only three hours of sleep a night. Others need ten hours of sleep a night. Most Americans sleep an average (平均值) of seven to eight hours a night. After the age of fifty the average sleep time goes down to 6.5 hours a night.
Most people have a bad night when they can not sleep. About one in three Americans has a problem with sleep. Many of these people can not fall sleep. This problem is called (叫做) insomnia. This is not a new problem. Many famous people in history had insomnia. Some of these people had special (特别的) ideas to another to make them sleep. Benjaming Franklin, the famous stateman (政治家) and inventor (发明家)，had four beds. He moved from one to another to fall asleep. King Lousis XIV of France had 13 beds and hoped that he could fall asleep in one of them. Mark Twain, the famous American writer, had a different way. He lay on his side on the end of the bed!
【小题1】.Most American people need________ hours of sleep a night.

【小题2】People need_________ sleep as they get older.

【小题3】“The problem is called insomnia.” Here “insomnia” means_________.

A．going to sleep easily	B．sleep at daytime
C．the ways of sleep	D．not being able to(能够)go to sleep

【小题4】Mark Twain lay on his side on the end of the bed because he_________.

A．was an old man	B．thought it was easy to go sleep
C．was a famous writer	D．didn’t have much room to sleep in

【小题5】The passage is mainly (主要地) talking about_________.

A．sleep	B．insomnia
C．how to go to bed	D．the famous person

Can you __________________ other ways to solve this problem?

A. use up B. come up with C. give up D. make up

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