The chemistry teacher warns us ________ in th...

The chemistry teacher warns us ________ in the laboratory.

A. not to smoke                B. against smoking

C. of smoking                D. A or B

高一英语单项填空中等难度题查看答案及解析

—Our teachers and parents always warn us not to smoke.

—Yes, actually, the risk of heart disease is a powerful argument ____ smoking.

A. against　　　　 　　 B. for

C. into　　　　　　　　 D. at

高一英语单项填空简单题查看答案及解析

----- Where did you ______ our chemistry teacher?

----- It was in the supermarket ______ I saw him.

高一英语单项填空中等难度题查看答案及解析

One Monday morning, Paul and his classmates were in science laboratory for their practical chemistry lesson. The students were going to work in pairs to do an experiment. Before they began, the teacher gave them this description of the different stages of the experiment.

Stage 1: Prepare the equipment: a test tube, a crucible, a Bunsen burner and tongs.

Stage 2: Weigh 5 grams of baking soda (sodium bicarbonate) and put it in a crucible.

Stage 3: Heat 10 ml of hydrochloric acid (盐酸) in a test tube.

Stage 4: Pour the warm acid onto the baking soda and continue to heat the mixture.

Result: The acid reacts with the bicarbonate（碳酸氢盐）to form water, carbon dioxide gas and salt. The hotter the mixture, the quicker the reaction. Continue to heat the mixture until the water evaporates, leaving the salt in the crucible.

Paul and his partner followed the instructions and set up their equipment. Paul went to the cupboard to get a bottle of hydrochloric acid. He found that there was only one bottle in the cupboard so he took that. There was no label on the bottle and Paul didn’t check with the teacher if it was the right solution.

He measured the liquid and poured it into a test tube. Using tongs to hold the test tube, he heated it over the Bunsen burner. That’s when things started to go wrong. The liquid in the test tube was not hydrochloric acid. When it was heated, it formed a thick cloud of white gas. Soon the room was full of this strong smelling white gas.

All the students started coughing and their eyes hurt. The teacher immediately opened the windows and ordered the students to leave the laboratory at once. She realized that the liquid was a crylamide (丙烯酰胺) and that it is poisonous.

Fortunately, nobody was injured in the incident. However, it taught the students and the teacher a good lesson.

1.What lesson did the incident teach the students and the teacher?

A. Never have a bottle without a label in the chemistry lab!

B. Obey your teacher’s instructions in the Chemistry lab.

C. A crylamide can’t take the place of hydrochloric acid.

D. Finding something unusual happened, you have to leave the laboratory at once.

2.What substance were the students making in the experiment?

A. Water              B. Carbon dioxide gas         C. Salt          D. Poisonous gas

3.Why did Paul make the mistake?

A. He went to the cupboard to get the bottle by himself.

B. He found that there was only one bottle in the cupboard so he took that.

C. There was no label on the bottle.

D. Paul didn’t check with the teacher that it was the right solution.

4.Why did the teacher send the students out of the classroom?

A. Because the room was full of this strong smelling white gas.

B. Because all the students started coughing and their eyes hurt.

C. Because the liquid was a crylamide and that it is poisonous.

D. Because someone was injured in the incident.

高一英语阅读理解中等难度题查看答案及解析

The teacher told us that the sun ＿＿＿ in the east and ＿＿＿ in the west.

高一英语单项填空困难题查看答案及解析

Every student is required to watch the teacher carefully before ___ the chemistry experiment.

A. performing      B. taking      C. picking       D. having

高一英语单项填空困难题查看答案及解析

It was 1972，and I was in second grade.In the classroom the teacher，Ms.Boyette，was ____ aloud to us from Island of the Blue Dolphins.And we had just come to a part of the book where the main ____ was training a wild dog.I was listening，caught up in the ____　　 of all.

Not far away from me，there seated a boy who always frightened or ____ others，so I was ___ of this boy.While Ms.Boyette was reading，I looked over at him，for he was someone I was in the ____ of keeping an eye on.I ____ that he was listening too，that he was engaged by the ____ ，that he was leaning forward in his seat and listening with all his heart.I ____ at him，open-mouthed.I was ____ with a sudden knowledge that this boy was in fact just ____ me.He was a kid who liked a story.The boy must ____ my eyes on him，because he turned.Then something ____ happened.He smiled at me. ___ ，I smiled back，unafraid.We were two ____ smiling at each other.

Why have I never forgotten this ____ moment? Why do I still ____ every detail of it? I think it’s because that moment illustrates so beautifully the _____of reading out loud.

It shows us into a safe room，where everyone involved，the reader and the listener，can have that chance to ____ each other.We humans long not just for the story，not just for the flow of language，but for the ____ that comes when words are read aloud.

1.A.shouting B.singing C.talking D.reading

2.A.author B.character C.reader D.listener

3.A.wonder B.silence C.warmth D.comfort

4.A.greeted B.touched C.hurt D.refused

5.A.aware B.terrified C.bored D.guilty

6.A.habit B.form C.effort D.hope

7.A.predicted B.imagined C.promised D.noticed

8.A.speech B.story C.journey D.diary

9.A.pointed B.nodded C.stared D.waved

10.A.struck B.mixed C.cheated D.confused

11.A.behind B.beyond C.around D.like

12.A.ignore B.feel C.meet D.observe

13.A.useful B.natural C.serious D.amazing

14.A.Then B.Again C.Instead D.Besides

15.A.strangers B.kids C.teachers D.enemies

16.A.funny B.busy C.lucky D.small

17.A.seek B.organize C.recall D.trust

18.A.power B.courage C.amusement D.ability

19.A.cheer B.see C.miss D.mention

20.A.challenge B.knowledge C.choice D.connection

高一英语完形填空简单题查看答案及解析

The girl the teachers considered ____was caught ______ in the exam, which surprised us very much.

高一英语单项填空困难题查看答案及解析

The boy the teacher considered ______ was caught ______ in the exam, which surprised us very much.

A. to be the best; cheating                 B. as the best student; to cheat

C. being the best; cheating                 D. as a good student; to cheat

高一英语单项填空中等难度题查看答案及解析

The head teacher told us that most of the students 　　　　 born in the 1990s.

A. were　　　　　　 B. had been

C. are　　　　 D. have been

高一英语单项填空中等难度题查看答案及解析