【单选题】be harmful for与be harmful to的用法区别 Smoking will ( ) others. Smoking will ( ) public civilization.
A.
be harmful to ,be harmful for
B.
be harmful for ,be harmful for
C.
do harmful for ,be harmful for
D.
do harmful for ,do harmful for
【单选题】A: _________ do you exercise? B: I exercise every day!
【简答题】情景交际。 ( )1. How often do you exercise? ( )2. Is that Sam? ( )3. What's the matter? ( )4. How do you get to school? ( )5. How far is it? A. I have a headache. B. By bus. C. Twice a week....
【单选题】立体分为平面和曲面两种,所有表面均为平面的立体称为( ) 。
【简答题】有色彩系具有三大特征: ( )、( )、( )。
【单选题】____ do you exercise ?
【单选题】A bird that eats harmful insects is called _____ bird.
A.
an insect-eating harmful
B.
a harmful insect-eating
C.
a harmful eating-insect
D.
an eating-insect harmful
【单选题】—__________ do you exercise? —I exercise three times a week. [ ]