在汽车维护中，（）维护属于强制维护。A.日常 B.一级 C.二级

取无穷远处电势为零，关于两个等量异种点电荷的连线中点的场强和电势，下列说法中正确的是(  ).

A．场强为零，电势不为零

B．场强不为零，电势也不为零

C．场强不为零，电势为零

D．场强为零，电势也为零

患者男，77岁。突发惊厥，二便失禁，查体见瞳孔扩大，对光反射消失。该患者的诊断可能是（）。

A.脑出血

B.脑膜炎

C.脑炎

D.高血压

E.癫痫大发作

根据对话内容，在每个标有题号的空白处填入一个适当的句子，使对话完整，合乎情景。

Tom: Good morning!

Ann: Good morning! Tom:where's Jay?

Ann: 1_______

Tom: London? Why has he gone there?

Ann: For his holiday.

Tom: Have you ever been there?

Ann: 2_______ But I'm sure I will go there someone. What about you?

Tom: Only once.

Ann: 3_______ 

Tom: Last year.

Ann: 4_______

Tom: For a week.

Ann: 5_______

Tom: I like it a lot.

Ann: I heard that it's foggy (有雾的) city.

Tom: Yes. there is almost much fog all the year in it.

句型转换。

1. Her favorite subject is music. (对画线部分提问)

    _______ _______ her favorite subject?

2. He likes biology because it's interesting. (对画线部分提问)

    _______ _______ he _______ biology?

3. Does he like to play with his cat? (作否定回答)

    ________, he ________.

4. We have science on Tuesday and Thursday. (对画线部分提问)

    _______ do _______ _______ science?

5. Mr. Li is my favorite teacher. (对画线部分提问)

    _______ _______ your favorite teacher?

6. That man is my uncle. (对画线部分提问) 

    _______ _______ that man?

7. This subject is interesting. (改为同义句)

    This _______ _______ _______ subject.

8. They get up at seven in the morning. (改为否定句)

    They _______ _______ up at seven in the morning.

9. The girls like music because it's exciting.(对画线部分提问) 

    _______ _______ the girls like music?

10. When do you go to bed every night? (改为同义句)

    _______ _______ do you go to bed every night?

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