Ants can smell things ________ dogs can．

1. A.
   like
2. B.
   as well
3. C.
   as well as
4. D.
   well as

Like all insects, ants have six legs. Each leg has three joints(关节). The legs of an ant are very strong so they can run very quickly. If a man could run as fast for his size as an ant can, he could run as fast as a horse. Ants can lift 20 times their own body weight.

The life of an ant is usually 45～60 days. Ants use their antennae(触角) not only(不但)for touch, but also(而且) for smell. The head of an ant has a pair of large , strong jaws(颚). The jaws open and shut sideways like a pair of scissors(剪刀). Grown-up ants cannot eat hard(硬) food. Instead they have the juice that they get from pieces of food. They throw away the dry part that is left over. An ant has two stomachs. One stomach holds the food for itself and the other is for food to be given to other ants. Like all insects, the outside of their body is hard..

Each ant group has at least one or more queens(蚁后). The job of a queen is to lay eggs and worker ants look after them.

Worker ants look after the young, protect(保护) the nest(巢) from unwanted visitors and look for food. At night worker ants move the eggs and baby ants deep into the nest to protect them from the cold. During the daytime, worker ants move the eggs and babies to the top of the nest so that they can be warmer. Each group of ants has its own smell. In this way, visitors can be made out at once. If a worker ant has found where the food is, it leaves a special smell so that the other ants in the group can find the food. Ants are clean and tidy insects. Some worker ants are given the job of taking the waste from the nest and putting it outside in a special rubbish dump(堆)!

(     ) 51. Ants can run very quickly because_______________________.

A. they have six legs              B. they are light in weight

C. their legs are strong            D. their legs have three joints

(     ) 52. The antennae of the ants are used to _____________________ .

A. touch and smell              B. move and watch   

C. get and eat food              D. open and shut sideways

(     ) 53. According to the passage, ants ________________________ .

A. eat up all the food            B. share (分享) food with others    

C. have three pairs of scissors     D. can live for three months

(     ) 54. Which sentence is right according to the passage?

A.      An ant has a long life of more than a year.  

B.      Ants can lift 2 times their own body weight.

C. There is only one queen in an ant group.   

D. Ants can tell the stranger easily by the smell.

(     ) 55. A worker ant does Not ____________________.

A. lay eggs                 B. clean their nest

C. look for food              D. look after baby ants

从2008年6月1日起，国家将禁止商家免费提供塑料袋，掀起全国“拒塑”的环保运动。假如你是李华，准备以“What Can We Do for the Environment” 为题，写一篇保护环境的英语演讲稿。 内容包含：(1)。在购物时用布袋子替代塑料袋；(2)。尽可能地再利用使用过的课本；(3)。离开教室应关灯；(4)。最好走路或骑自行车上学；(5)。简述理由：保护环境，减少污染，节约能源等。参考词汇：布袋子cloth bag 塑料袋plastic bag 保护protect 能源energy污染pollution 课本textbook

　　What Can We Do for the Environment

Our environment is becoming

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