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The first photo of a black hole was shown to the whole world ______ April, 2019. We are now closer to solving the basic questions about universe.

A.in B.on C.at D.for

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根据下列短文内容,在短文后的空格处填上一个恰当的词,使短文完整、通顺。

According to an online survey, 93. 8% of those surveyed have joined WeChat family groups. Here are four students talking about their opinions.

Xing Yuxi, 12, Chongqing

I like to have a family group on WeChat- Hs- important to have a good relationship with family members, as we love them more than 1. else in the world. In the group, we often share photos that show our daily activities 2. each other. We freely talk about our work, school, or even entertainment. It is nice to communicate with people who know me well.

Wang Wenyi, 12, Guangdong

WeChat family groups can help us do lots of things. For example, if you want to make a big decision with your family, you can just send a single message to the 3. on WeChat instead of contacting each member separately(分开地). This 4. a lot of time.

Ma Jingwen, 14, Sichuan

I used to be in my family’s WeChat group, 5.I'm not in it anymore. I don't think it is very useful. Every morning, my family members all send the same emoji(表情), which says good morning, my friends ". They’re annoying to me. On weekends, they share many pictures while I'm trying to study. My phone keeps ringing, which really troubles me.

Hong Weicheng, 12, Guangdong

Many people share their photos, addresses, and other private information in their Wechat family groups, which is not safe. 6., the long texts and continuous voice messages are annoying to me. My family members often talk about stuff( 东西) that has nothing to do with me but I have to spend time checking the 7.anyway. It causes me to spend more time on my phone. It is8. for my eyes.

—How does your teacher speak?

— She speaks________.

A.loudly and slow B.loud and slow C.loudly and slowly D.loud and slowly

— You’d better think twice about it before making the final decision.

— ______ I’ve wasted a lot of time to think about it.

A.It’s valuable advice. B.I can’t agree more. C.Isn’t it a good idea? D.Do you think so?

— You look sleepy. What for?

— I stayed up last night. My report on Green Lifestyle ______ to the whole class in two days.

A.gives B.is giving C.will be given D.was given

Who would win in a competition to memorize numbers, a chimp(猩猩) or a teenager?The teenager? Think again.Scientists have proved that chimps perform better than human beings when it comes to this kind of problem. We may have to rethink what we believe about human memory.

Memory is our ability to learn something, save it and recall it when needed.Our memories are important to our sense of self, our personalities, and our ability to understand the world

Scientists say that there are different types of memory.There is short-term memory and long-term memory.Your short-term memory saves information for a few seconds or a few minutes.For example, the time it takes to compare the prices of a few items(物件)in a store.Long-term memory involves the information you try hard to keep, because it's meaningful to you.(an example is data about family and friends).And then there is visual (视觉的) memory and sound memory.But these are not hard and fast: scientists argue a lot about the nature of memory.

Scientists have also found that people memorize things in different ways.Some memorize better with the help of pictures.Others are helped more by sounds.One thing s for sure.If you can combine different kinds of memory together, you will remember a lot So why not try pictures with English words? At the same time, listen to recordings of the same group of words.This may help when it comes to memorizing it.

Imagination and association can be useful, too.By imagination, scientists mean to picture a word in your mind.Association means relating the word to something you have already known.

1.From Paragraph 1, we can know_________.

A.human beings are less clever than chimps

B.human memory is not as good as before

C.chimps can memorize numbers better than teenagers

D.chimps perform better than human beings in many aspects

2.The short-term memory can keep the information in your mind for_________.

A.an hour B.half an hour C.a few minutes D.one second

3.What's the main idea of the passage?

A.Why a chimp does better than a teenager.

B.How to memorize things quickly and well.

C.Different kinds of memory and several good ways to memorize things.

D.Imagination and association are useful in memorizing things.

Jim decided to go on with the task_________ he knew he would face many difficulties.

A.so B.unless C.although D.until

—Thanks a lot for teaching us so well and patiently, Mrs. Miller.

—________. I'm proud of you all, too.

A.Enjoy yourself B.That's all right

C.It doesn't matter D.Take your time

A.A swimming pool. B.A museum. C.A park.

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