低温期( )，植物受害越重。
A．温度越高
B．越短
C．越长
D．有间隔
参考答案：C
I’m sorry I can’t help ____ the flowers, because I’m busy preparing for the singing competition ____ tomorrow.
A．watering; to be held
B．water; being held
C．to water; held
D．water; to be held
先天性甲状腺发育障碍可引起
A．侏儒症 B．呆小症 C．肢端肥大症 D．巨人症 E．向心性肥胖
