属于水溶性维生素的是()
A.维生素A
B.维生素c
C.维生素D
D.维生素E
E.维生素K
参考答案:B
If a person takes drugs, they will slow down his thinking and ________ turn off his brain.
A.eventually
B.certainly
C.actually
D.hopefully
精确制导导弹按射程远近分类,其类别有:()
A.近程导弹
B.中程导弹
C.远程导弹
D.洲际导弹