具有益肾吲精，养心安神功效的药是( )
A．枸杞子B．五倍子C．莲子D．诃子E．金樱子
参考答案：C
Schools across China are expected to hire 50,000 college graduates this year as short-term
teachers, almost three times the number hired last year, _____reduce unemployment pressures.
A．help
B．to have helped
C．to help
D．having helped
对（）设备必须进行年度检查
A.变配电
B.电梯
C.电力设备
D.中央空调
