问题 单项选择题

太阳辐射是指太阳向宇宙空间发射的电磁波和粒子流,它是地球表层能量的主要来源。以下:关于太阳辐射表述有误的是( )。

A.太阳辐射随季节变化呈现有规律的变化,形成了四季
B.大气对太阳辐射的削弱作用包括大气对太阳辐射的吸收和散射
C.太阳辐射在大气上界的分布是由地球的天文位置决定的,故称为天文辐射
D.除太阳本身的变化外,天文辐射能量主要取决于日地距离、太阳高度角和昼长

答案

参考答案:B

解析: 大气对太阳辐射的削弱作用包括大气对太阳辐射的吸收、散射和反射。太阳辐射经过整层大气时,0.29μm以下的紫外线几乎全部被吸收,在可见光区大气吸收很少。在红外区有很强的吸收带。大气中吸收太阳辐射的物质主要有氧、臭氧、水汽和液态水,其次有二氧化碳、甲烷、一氧化二氮和尘埃等。云层能强烈吸收和散射太阳辐射,同时还强烈吸收地面反射的太阳辐射。云的平均反射率为0.50~0.55。故选B。

阅读理解

Did you know it takes 21 days to form a good habit? Research shows that when you “stick to something” for three weeks you are more likely to reach your goals. This is important for language learners or anyone who wants to make a change.

People who try something new often “fall off the wagon”. Whether it is a plan to lose weight or a decision to learn something, life often gets in the way. Those who make up their minds to learn English are more likely to succeed if they have a short-term goal at the beginning.

How to make learning English a habit:

Set a specific goal

Example: Break up the four main skills (listening, speaking, reading and writing) and plan to do one hour of practice in each area at the same time every day.

Find a learning partner

Choose a friend to keep you moving towards your goal. Your friend doesn’t need to be a language learner. He can be someone who wants to start exercising. He can be someone who wants to write a novel. It is best if you both have a goal.

Write out how your life will change when you reach your goal

If I improve my English, I will be able to get a better job.

If I take the TOEFL test, I will be able to get into university.

If I improve my pronunciation, my customers will understand me.

Keep track of your progress

Keep track of your effort in a notebook or online list. Share your progress list with your partner.

When you reach 21 days, reward yourself! Go out for a dinner or a movie or buy yourself a treat. It will be easier to stay on your program now that you are in the habit. If you ever fall off again, put yourself back on the 21-day challenge.

65. What can be inferred from the passage?

A. Life sometimes makes people give up their plans or decisions.

B. An English learner should find a language learner as a partner.

C. A long-term goal is of importance in forming a good habit.

D. It is necessary to spend an hour on each language skill every day.

66. Why does the author advise an English learner to reward himself when he reaches 21 days?

A. Because he should share his progress with his partner.

B. Because he has had a good knowledge of English.

C. Because he would put himself on another 21-day challenge.

D. Because he has formed a good habit of learning English.

67. The best title of the passage would be “________”.

A. Taking 21 days to form a good habit

B. A research on learning English

C. Make learning English a habit

D. Setting a goal in life

单项选择题