为了防止精子和卵细胞的结合，常常在哪个部位进行结扎手术？（） A．输卵管 B．子

单词拼写。

1.  Many roads are under ______(建设),which leads to much inconvenience.

2. I am to b______ for the great loss rather than her.

3. I am afraid the teacher is not _______(可找到的) at this moment.

4. Law r______ everyone should pay the tax.

5. The book made a good _______(印象) on him.

6. From his appearance we may safely______(断定) that he is a chain smoker.

7. She dressed up in the c______ of a cartoon charater greeting people in the park.

8. He was a______ of speaking to others with a mouthful of food.

在植物进行扦插时，要去掉部分叶片，原因是[ ]

A．减少营养消耗

B．减少光合作用

C．减少呼吸作用

D．减少蒸腾作用

收费稽查工作坚持（）、惩处、（）、教育的原则。

两辆车沿着平直公路往同一方向行驶，某时刻恰好经过同一位置，此时A以4m/s的速度继续匀速向前，而B以10m/s的速度开始刹车，加速度大小为2m/s²，则它们再次相遇所经用时间为（）

A.5s

B.6s

C.6.25s

D.6.5s