Choose and circle.圈出正确的选项。

1. Is this        (a,／) paper?

2.        (When, What time) is New Year's Day?

3. I go home        (in, at) 4:30 in the afternoon.

4.        (March, April) is the fourth month of the year.

5.        (What, Where) are they? They're in the gym.

内装式燃油泵与外装式燃油泵比较，它不易产生气阻和燃油泄露，且噪音小。