—The light in the office is still on. —Oh, I forgot______.
A. turning it off
B. turn it off
C. to turn it off
D. having turned it off
It is quite usual now for a working mother to______.
A. spend all her time and money on her only child
B. be responsible for bringing up her only child
C. have and bring up only one child
D. put all her energies on her job
According to Dr. Rascool, the effective solution to the unfavorable forecast is______.
A. to reduce the carbon dioxide content of the atmosphere
B. to decrease the collections of aerosols in the air
C. to substitute favorable fuel for the present type
D. to adopt some effective measures to destroy the aerosol layer
马克思根据人的发展状况把人类历史划分为依次更替的三大形态。这三大形态是 ( )。
A. 人的依赖性社会、物的依赖性社会、个人全面发展的社会
B. 自然经济社会、商品经济社会、产品经济社会
C. 原始公有制社会、非公有制社会、共产主义公有制社会
D. 无阶级社会、阶级对立社会、无阶级社会
微信支付 
支付宝支付