①网络信息良莠不齐,需要学会辨别
②国家高度重视未成年人的保护工作
③网络世界不利因素太多,要远离网络
④只要加强督查,就能杜绝不良影响
The ruler is .
—Yes. We worked ________ and finally made it.
①在洁净的载玻片中央滴一滴清水;
②用凉开水漱口后,用消毒牙签的一端在口腔内侧壁轻轻刮几下;
③将牙签上附着的碎屑涂在水滴中,并用镊子分散;
④盖上盖玻片;
⑤用稀碘液染色;
⑥用低倍镜观察。
请你根据小明的操作过程,回答下列问题。
错误:;更正:。
a |
0.0001 |
0.01 |
1 |
100 |
10000 |
|
0.01 |
x |
1 |
y |
100 |
①已知 ≈1.414,则
=,
=;
② = 0.274,记
的整数部分为x,则
=.
A couple(夫妻)from another country come to New York. They want (take) a walk and see the city, but they are afraid of getting (lose) because they can't speak any English.
Before they leave, they write down the words on the gate of the hotel. They walk around city and buy something they like. After two (hour), they begin to go back. Of course, they (do)know the way. they go to a policeman and ask him the way to the hotel. The policeman where they live. The couple take out the paper the words on. The police is surprised(惊讶的). He (read) the words on the paper, " Welcome to (we) hotel!"
如图,直线m∥n,△ABC为等腰三角形,∠BAC=90°,则∠1= 度.