— I don’t think we can find a new day to work out the problem. — But we’d better not . A. end up B. hand out
_____, John returned to school from his hometown. A．The summer vacation being over B．The summer vacation is over C．Because the summer vacation over D．After the sum
某学生用化学知识解决生活中的问题，下列家庭小实验不合理的是 A．用食醋除去暖水瓶中的薄层水垢 B．用米汤检验食盐是否为含碘盐 C．用纯碱（Na2CO
As director of the company，I can’t three weeks away from work. A.carry B.cost C.pay D.afford
下列运算正确的是（ ▲ ）A．；B．（为实数）；C．；D．．
The mother forbids noise in our study，but she doesn’t forbid us____ a discussion． A、to make；to have B、making；to have C、making；having D、make；having
下列各句中没有语病的一句是（ ） A、天气晴和，春光煦煦的雁回山，是少见的好天气。 B、静静旋转的鹤群，阵势立即崩溃，惊恐万分，慌乱啼鸣，
取一小块金属钠放在燃烧匙里加热，下列实验现象描述正确的是( ) ①金属钠熔化 ②在空气中燃烧，火焰为紫色 ③燃烧后得白色固体 ④燃烧时火焰
，下面结论错误的是
B.
∥平面
D.异面直线
