A:1640年
B:1649年
C:1688年
D:1689年
请从右栏中为左栏的图片选择相应的文字描述
Picture
Description(描述)
① ____
A. Aren't they lovely? They walk on the ice and snow. They can also swim. Do you want to know more about them?
② ____
B. Do you often watch him play basketball? If you do so, what do you think of him? Good or awesome(令人敬畏的)?
③ ____
C. — I can't find my keys.
— Let me help you.
④ ____
D. — Where's your pen friend from?
— Sydney. Oh, it's in Australia.
⑤ ____
E. Do you enjoy playing soccer? Look! They often play after school. How excited they are!
选择正确的读音。
nán nàn
①这些话说出来本身对我就是一种责难____。
②我不希望这件事使你为难____,但我们也必须这么做。
上述柜子中的有些物质间能发生置换反应。请从柜中选择两种物质,写出它们之间发生置换反应的化学方程式____ 。