【題目】---There is someone knocking at the door. Who_______ it be?

---I'm not sure. It_______ be a postman.

A. may; must B. will; can C. can; may D. may; will

【答案】C

【解析】

試題分析：英語(yǔ)中有些情態(tài)動(dòng)詞，通過(guò)使用不同的時(shí)態(tài)形式，可以表示“推測(cè)”的含義。1. 情態(tài)動(dòng)詞 + 動(dòng)詞原形：must + 動(dòng)詞原形，表示對(duì)現(xiàn)在的事實(shí)進(jìn)行非常有把握的推測(cè)，一般用于肯定句。如：There must be something wrong. 一定是出了什么差錯(cuò)。may / might / can / could + 動(dòng)詞原形，表示對(duì)現(xiàn)在、未來(lái)事情發(fā)生的可能性的推測(cè)。此時(shí)， might, could 不表示過(guò)去，只是表示推測(cè)的語(yǔ)氣更加不肯定。一般情況下， may, might 用于肯定句中； can, could 用于否定句、疑問(wèn)句中。根據(jù)語(yǔ)境可知敲門(mén)的人可能是誰(shuí)呢?不確定有可能是郵遞員，故選C。

練習(xí)冊(cè)系列答案
相關(guān)習(xí)題

科目：初中英語(yǔ) 來(lái)源： 題型：

【題目】閱讀下列材料,從所給的六個(gè)選項(xiàng)（A、B、C、D、E 和 F）中,選出符合各小題要求的最佳選項(xiàng)。選項(xiàng)中有一項(xiàng)是多余選項(xiàng)。

No one knows when the first house was built and who the first one to build the house was. But the houses are changing all the time.

31. What will the house of the future look like? Could it have gardens on its walls, or a pool with fish for dinner? Architects(建筑學(xué)家)believe that they may come true one day. The only thing for sure is that the houses will be as green as possible in the future.

32. Many architects in the world would like to build a house like a leaf—the surface of the house collects sunlight during the day. The energy can be used to heat water, produce electricity, and even make fresh air for the room. The “root”(根)of the house is deep under the ground. It uses the soil to control the room’s temperature.

33. Like a lizard(蜥蜴), changing color with the weather is the most important design of a lizard house. When it’s in the bright sun, the cover of the house will turn white to protect it from strong heat. During dark days, it turns dark and takes in as much light and heat as possible to produce energy.

34. This design is perhaps for the future of food. It has a garden on the outside wall of the house. People can plant tomatoes, carrots and green tea on them. So every morning, you just need to walk outside and collect your meals.

35. Looking to the future isn’t the only way to be green. Sometimes, the old ways of building houses can also help cut down energy use. For example, a chimney(煙囪)can be a useful air conditioner because it is easier for hot air to run out of the chimney.

A. Learning from the past

B. Meals at home

C. The lizard house

D. Houses in the future

E. The tree house

F. The history of the houses

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源： 題型：

【題目】We can't afford to make any mistakes. To us, _______________.

A. a miss is as good as a mile

B. the grass is greener on the other side

C. it never rains but it pours

D. when in Rome, do as the Romans do

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源： 題型：

【題目】have, do, keep, be, clean

【1】Our body needs vitamins ______ healthy.

【2】There _______ not any milk in the fridge.

【3】Kitty often helps me _______ the classroom.

【4】It’s not good to go to school without _______ breakfast.

【5】It is important _______ exercise for half an hour every day.

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源： 題型：

【題目】 根據(jù)對(duì)話意思和所給首字母，寫(xiě)出正確的單詞.

September 10this Teachers’ Day in China. It is a special and great f【1】. A lot of students celebrate this day with their teachers. Teachers work very hard all the time in a year. O【2】this day they can have fun. Which teacher is your f【3】one? What present can you get r【4】for your dear teachers? Flowers or any little presents? Your teachers are happy to get your beautiful presents. Let’s s【5】“Happy Teachers’ Day” to our dear teachers together.

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源： 題型：

【題目】根據(jù)漢語(yǔ)提示、首字母提示、英文解釋和句意，寫(xiě)出句中所缺單詞，使句子通順。

【1】Could you help tell me where the _________skirts are?(女演員)

【2】 Believe in yourself. I’m sure that you can pass the f________ exam.

【3】Were there any v________ in the attack?

…Yes. Three people died.

【4】Have you decided _________ you will go to Beijing on holiday or not?

【5】All the students sin getting to the top of the mountain at last.

B、根據(jù)句意從方框中選擇合適的詞，并用其適當(dāng)形式填空，使句子通順。

safe eighty wealth mistake breath

【6】 Everyone is excited to hear that the Canadian lady won the Nobel Prize for Literature in her ___________.

【7】She looks like her sister so much that she is often_______ for her sister.

【8】_________ must come first when you go travelling.

【9】_________ deeply when you are nervous, and you’ll feel much better.

【10】 He is theperson I have ever met, but he never shows off.

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源： 題型：

【題目】—Is your health getting better?

— No. And ______. The doctor gave me the wrong medicine this time.

A. every dog has its day

B. the early bird catches the worm

C. a miss is as good as a mile

D. it never rains but it pours

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源： 題型：

【題目】In June and July this year, many people will go to Russia to watch the ________ football matches which will make them _________.

A. excited, exciting B. exciting, excited

C. excited, excited D. exciting, exciting

查看答案和解析>>

科目：初中英語(yǔ) 來(lái)源： 題型：

【題目】—Shall I give you a ride (搭乘)as you look so tired?

—Thank you. ___________________.

A. Don’t mention it B. It is your duty

C. Do as you like D. It couldn’t be better

查看答案和解析>>

同步練習(xí)冊(cè)答案