【单选题】听力原文:W: Won't you take the car? It's quite cheap. M I'm having second thoughts about buying the car. Q: What does the man mean? (15)
A.
He's not so sure to buy the car.
B.
He's ready to buy that car.
C.
He's certain to buy the car.
D.
He's afraid to buy that car.
【简答题】在客流量较大的区域,部分面食店为了减少顾客的就餐等待时间,会把面食的温度控制得恰到好处。某兴趣小组为了探究热水与冷水混合后的温度和哪些因素有关,将不同质量、不同温度的水在绝热容器中进行混合,并测出混合后的温度。实验结果记录如下表。 ( 1 )分析实验序号 1 与 2 与 4 的数据可知:当热水的温度 t 1 、冷水的温度 t 2 与冷水的质量 m 2 保持不变时,混合后的温度 t 随热水的质量 m...
【单选题】由式得 i =C , 下面结论中正确的是 ( )
【多选题】高频保护负序方向保护的原理接线图的主要构成元件有( )。
【单选题】What's the biggest difference between the first and second green revolution in America?
A.
The first green revolution is to improve the food output while the second is not.
B.
The second green revolution is based on the theory of inserting genes while the first depends on that of crossbreeding.
C.
The technology that is used in the second green revolution has much more enormous potential than that of the first's.
D.
The second green revolution has caused harm to the environment while the first has not.
【单选题】下面是电解水过程的示意图,根据图式可得出的结论不正确的是 [ ]
【简答题】A.what's more B.in the second place C.in addition D.on the other hand
【单选题】What is the main idea of the second paragraph?
A.
What had happened during the boy's way to grandmother's house.
B.
Why he didn't want grandmother to know about why his body was bruised.
C.
How the boy was looking forward to that particular evening.
D.
The reasons why he was so curious about the life in the Renaissance.
【判断题】当核酸复性时,碱基层层堆积,包在螺旋内部,它们之间的π电子相互作用,使紫外吸收值 增加 ,这种现象称为增色效应。