What do you eat every evening? Do you eat meat? Do you eat vegetables? Do you eat fruit or dessert(甜点) after dinner? We asked the 55 students of Class 1, Grade 7 in Sunshine School. Here is the result(结果).

小题1:How many girls are there in Class 1, Grade 7?

A．Twenty.

B．Thirty-five.

C．Thirty.

D．Twenty-five.小题2: All the students in the class eat          for dinner.

A．meat

B．dessert

C．fruit

D．vegetables小题3:In the class, 10 students don’t eat           for dinner.

A．meat

B．dessert

C．fruit

D．vegetables

摄影时用于补偿管电压变化引起的管电流变化的是（）

A.灯丝

B.集射罩

C.灯丝变压器

D.空间电荷补偿变压器

E.电容电流补偿变压器