【正文】 好從現(xiàn)在開始努力學(xué)習(xí)，否則你考試會(huì)不及格的。故選D。根據(jù)“be used either by teachers at school or parents at home.”可知，指很多在線資源既可以供學(xué)校的老師使用，也可以供家長(zhǎng)在家使用。17．D解析：D【詳解】本題考查：情態(tài)動(dòng)詞辨析。正確答案為：D【點(diǎn)睛】would，could，must，might，may，can都可以表示“可能性”：按照可能性的大小可以排序?yàn)閙ight、may、could 、can、should、would、must。can39。tomustn’t禁止；should應(yīng)當(dāng)；can會(huì)、能；needn’t不需要。上面寫著“禁止吸煙”。must引導(dǎo)的一般疑問句否定回答為needn’t或don’t have to，故選A。從高處墜落時(shí)，即使是小物體也可能造成嚴(yán)重傷害或死亡。27．A解析：A【詳解】句意：——吉姆會(huì)來揚(yáng)州度假嗎？——他可能會(huì)來，這要看他有多少家庭作業(yè)。根據(jù)“get”可知，此處是needn’t do sth短語，故選C?？疾榍閼B(tài)動(dòng)詞辨析。這是杭州的絲綢做的。故選D。你不必每次都來我們前臺(tái)。根據(jù)空后“…be widely seen”可知，這里表示這些花能夠被廣泛看到，can符合語境，故選B。這是違法的。t不可能是，表示有把握的否定推測(cè)；shouldn39?？疾榍閼B(tài)動(dòng)詞。——那不可能是他?？疾榍閼B(tài)動(dòng)詞表推測(cè)。故選C?？疾榍閼B(tài)動(dòng)詞。故選A。may可能；will將會(huì)，表意愿；can能，可以；must必須。故選B。故選A。mustn’t禁止；don’t need不需要；needn’t不必；can’t不能。can’t不可能；mustn’t禁止；may not可能不；needn’t不必。根據(jù)此處表示推測(cè)，應(yīng)該用may表示可能性，故選D?？疾榍閼B(tài)動(dòng)詞。根據(jù)“Sometimes he works extra hours.”，可知應(yīng)該是不確定，故選D。我馬上把火撲滅。根據(jù)get18．C解析：C【詳解】句意：你應(yīng)該非常重視你的發(fā)音，因?yàn)樗诳谡Z考試中如此重要。But still something may go 。must 必須，一定；should 應(yīng)該，shall的過去式；may 可能；shall 應(yīng)該?？疾榍閼B(tài)動(dòng)詞詞義辨析?？疾楹閼B(tài)動(dòng)詞的被動(dòng)語態(tài)和情態(tài)動(dòng)詞跟動(dòng)詞原形。would將；may也許；can可能，可以；must必須。10．C解析：C【詳解】句意：我們不應(yīng)該從大樓上扔任何物體。mustn’t禁止；shouldn’t不應(yīng)該；needn’t不必；can’t不能。故選B。考查情態(tài)動(dòng)詞?？疾榍閼B(tài)動(dòng)詞。2．B解析：B【詳解】句意：使我高興的是，我們不必去銀行了。 can B．may not。 be against B．be paid attention。needn’tC．mustn’t I。 hold B．gathering。d better __________ hard from now on, __________ you will fail the exam.A．work。 be against14．I ________ hear you clearly. Would you please repeat it?A．mustn’t B．can’t C．needn’t D．shouldn’t15．A lot of online resources ________ be used either by teachers at school or parents at home.A．can B．should C．need D．must16．—Have you decided to take up teaching as career after graduation? —I ________ go abroad for further education instead. But it depends.A．must B．should C．may D．shall17．We’ve discussed every detail of this plan and have got everything ready. But still something __________ go wrong. We still have to be very careful.A．must B．should C．would D．may18．You ______ pay too much attention to your pronunciation, as it is so important in the oral（口頭的） test.A．shouldn’t B．mustn’t C．can’t D．needn’t19．— Ready? Let’s get started, Martin.— Swimming? I just ________ can32．—Seventy dollars for such a dress! You ________ be joking!—I’m serious. It’s made of silk from Hangzhou.A．must B．need C．will D．can33．Cars ________ give way to walkers on some roads in Binhai, or the drivers will be fined.A．may B．will C．can D．must34．Mr. Black ________ be at home now. He went abroad on vacation last Friday.A．can’t B．mustn’t C．needn’t D．shouldn’t35．—Could you tell me how to renew the library books?—With pleasure. You ________ e to our desk every time. It’s easier to renew them on