My uncle from Hongkong has changed so much that I could hardly ________ him at the airport. A. understand B. realize C. recognize D. know
CO2和O2是自然界中生命活动不可缺少的两种气体，它们的相同点是 A．都无毒 B．都能灭火 C．都能供给呼
— Mrs. Green,do you think I can get an “A” in the final exam if I start working hard now? — Of course. _________. A. Better late than never
Money Matters Parents should help their children understand money. ____71 So you may start talking about money when your child shows an interest in buying things, candy or toys, for example.
---_________ does your sister walk her dog ? ---Once a day. A. How many B. How fast C. How soon D .How often
---- I didn’t go to see the doctor yesterday.---- But you __________ . A. ought B. ought to C. oughted to D. ought to
为了确定某物质是否变质，所选试剂（括号内物质）达不到实验要求的是（ ） A．氢氧化钠是否变质（BaC12） B．FeSO4是否被氧化（KSCN）
“内战时一切陷入停顿，现在我们必须从头做起。……我们希望建立一种给外国人工商业承租权的制度，来加速我们的经济发展。”为此，苏俄(联)实施
