人站在阳光下，可以看自己的“影子”；人站在河边，在水中可以看到自己的“倒影”，这两个“影”相同吗？请分析并解释。

根据下面的对话情景，在每个空白处填上一个适当的句子，使对话的意义连贯、完整。
A: Hello, Eliza! What are you doing for the summer vacation?
B: I'm visiting some famous places.
A: ____ ?
B: I’m going to Canada.
A: ____ ?
B: By plane.
A: ____ ?
B: My friend Kay.
A: ____ ?
B: For about a week.
A: ____ !
B: Thank you.

完形填空
      This is my desk, and 1 books are on it. One is yellow and the other(另外的) is blue. You can see a 2 on the desk, too. The clock is red. My pencil case is3 the desk, too. A  pen, an eraser  and a ruler4in it. The pen is black. The5 is yellow, and the ruler is white.
    6 is my pencil? Well, it's under the desk. A baseball is under the7too. But the baseball isn't 8. It's my brother's. Is my computer under the desk, too? No，9isn't. Where is it? I can't10it in the room.

根据所给字母，正确写出单词

①tighn  ____   ②ingnomr  ____   ③niengve ____ 

④nfaontroe ____   ⑤pplae ____ 

下列实验操作正确的是(     )