It’s nearly eight o’clock. I must hang up and get down to work. My boss________ be here at any moment.
| A．should | B．must | C．could | D．would |
A
解析試題分析：考查情態(tài)動(dòng)詞辨析。A應(yīng)該，竟然；B必須，一定；C能夠，可以；D會(huì)，過(guò)去常常；句意：現(xiàn)在已經(jīng)8點(diǎn)了，我要掛電話工作了，我的老板應(yīng)該已經(jīng)來(lái)了。根據(jù)句意說(shuō)明A正確。
考點(diǎn)：考查情態(tài)動(dòng)詞辨析
點(diǎn)評(píng)：情態(tài)動(dòng)詞是一種本身有一定的詞義,表示說(shuō)話人的情緒,態(tài)度或語(yǔ)氣的動(dòng)詞,但不能單獨(dú)作謂語(yǔ), 只能和其他動(dòng)詞原形構(gòu)成謂語(yǔ)。can (could) 表示說(shuō)話人能,可以,同意,準(zhǔn)許,以及客觀條件許可；will, would用于疑問(wèn)句表示說(shuō)話人向?qū)Ψ教岢稣?qǐng)求或詢問(wèn),用 would 比 will 更婉轉(zhuǎn),客氣。Shall表示命令,警告,允諾,征求,勸告,建議驚奇。
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A．food B．sleep C．energy D．blame
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A．Caffeinated drinks.
B．Too much family activities.
C．Circadian rhythms.
D．Too much homework.
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A．Three. B．Four. C．Five. D．Six.
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A．a(chǎn)dvise parents to let sleeping teenagers lie
B．explain why teenagers often sleep late
C．state schools should start late in the day
D．warn teenagers not to drink coffee before bed
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