下列哪项是封闭式问题的缺点A．填答简单 B．应答率高 C．在调查中无法得到更多的答案

进入阴毛中，环绕阴器，上达小腹的经脉是（）

A.任脉脉

B.冲脉

C.足太阴脾经

D.足厥阴肝经

E.足少阴肾经

下列7种区段，哪种不属于运行维护的特殊区希 　　①居民区; 　　②大跨越; 　　③多雷区; 　　④重污区; 　　⑤重冰区; 　　⑥跨越铁路或高速公路; 　　⑦林区。

A．①+②

B．③+⑦

C．①+⑥+⑦

D．②+④+⑦。

______everybody's disappointment, the football match was put off.

A．To

B．In

C．With

D．For

阅读理解。

     When Babbage was working at Cambridge, a new idea occurred to him. He wanted to construct a

calculating machine to work out the solutions (解法) to maths problems not only with correctness but

also with a speed beyond the power of any human mind. His machine could solve problems involving

(涉及) long rows of figures in one continuous operation (运算).

     In 1822 Babbage exhibited his invention and won a prize from the government. After that, he

immediately started to work on a larger machine designed to solve more difficult problems. Although he

received some money left by his father, the money was not enough to support his design. He wrote to

the government about his plan and was given ￡2500 to start with, a sum worth much more in those days

than it is now.

     Babbage continued his work in London for four years. Then his health broke down, and he had to take

a long holiday abroad. When he returned to London in 1828, he was at the end of his resources. Many bills

remained unpaid. His chief assistant and co-workers quarreled with him and left with many expensive tools.

For one year no work was done. During this period, Babbage, whose mind was always active, suddenly

thought of a completely new idea for the machine. He rushed to meet the government officials to explain his

new idea. But this time, they were unwilling to help him. For eight years, they refused to say whether they

wanted the machine or not, and their final answer was "No." 

     From 1828 to 1839, Babbage held the position of professor at Cambridge very successfully. But his

greatest work was the unfinished calculating machine which stood covered in dust in his house. It was the

beginning of the modern computer.

1. The machine Babbage designed would solve difficult maths problems ______.

A. in one operation with few mistakes

B. in more than one operation without any mistakes

C. in more than one operation with slight mistakes

D. in one operation without any mistakes

2. Babbage failed to continue his research work in 1828 mainly because _______.

A. he was in poor health

B. he almost ran out of money

C. his co-workers argued with him

D. he spent all his money on his bills

3. Babage explained his new idea to the government officials, expecting that _______.

A. they would agree to his plan

B. they would pay for his new idea

C. they would support him with money

D. they would exhibit his new design

4. From the passage, we can infer that _______.

A. Babbage failed to be a famous scientist at Cambridge

B. Babbage always had new ideas but gave them up easily

C. Babbage always needed support from the government officials

D. Babbage was the first designer of the modern computer

在美国，当儿童准备食物和成人一起吃饭时，儿童对营养的概念、态度和行为得以发展。