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—Hello, May I speak to Mr Black?

—Sorry, he ______ Hong Kong for a meeting and he______ back in a week.

A. went; was B. has been to; will be

C. has gone to; has been D. has gone to; will be

【解析】

試題分析：句意：你好，我能跟布萊克先生通電話嗎？對不起，他去香港開會了，在一周后回來。第一空用現在完成時，對現在造成了影響，has been to去過，現在已經回來了；has gone to去了，人在去某地途中或已經到達某地，不在說話的地方。第二空根據時間狀語in a week一周后，是表將來的時間，故用一般將來時，結合語境故選D。

考點：考查現在完成時。

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The haze（霧霾）season is back. How much do you know about haze? Haze can also be called “Smog”. The word "smog" is from the words “smoke” and “fog”, it first appeared in the early 20th century, It is a kind of air pollution（污染）caused（導致）mostly by cars and factories.

Smog will do great harm（傷害）to your health, especially lungs（肺）.It can make you cough and cause skin and eye problems. It seems that we can do nothing to stop it, but only wait until the wind blows all the smog away. However, there are some easy ways to prevent it hurting you. Here are some of them.

1. Don’t do exercise in the open.

Exercising in the open makes you breathe（呼吸）deeply, and you will take in the particles（顆粒物）deep into your lungs.

2. Stay indoors and keep the air clean.

If you can, just stay in your room and keep the doors and windows closed. Remember to air your room twice a day, you can open the window at noon or at night for half an hour.

3. Wear a mask.

Paper and cotton masks can not help you in the haze weather. Some special masks, such as N95 masks, can keep you from breathing in the particles in the air.

4. Change your diet.

Scientists find that vitamin A, C and E can greatly help protect your eyes, nose and lungs.

So eat more green vegetables and fresh fruit everyday. What’s more, do not eat food with too much fat（脂肪），it’s bad for your lungs.

The haze weather
What is haze?	·It 1. smog, a kind of smoky and 2. weather. ·It is a kind pollution caused by cars and 3. .
What is the harm?	·It is 4. for our health.
5. to prevent the haze?	·Don’t 6. outside.
·Stay indoors as 7. as possible with the doors and windows closed. ·Remember to open the windows for a while to keep the 8. clean.
· 9. a mask to prevent taking in the particles.
·Change your diet. Vitamins can make you healthy. So, please eat more vegetables and fruit and 10. meat.