Overall, our study offers proof that students who worked more than 20 hours weekly were not comparable to their classmates.
A. which
B. whether
C.that
D. what
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1,_____ (开夜车)makes working teenagers more tired in school.2,_____ (工作很多个小时)can be associated with increased alcohol and drug use.3, It is no good_____.(每周工作10多个小时)4,_____(为我的老板安排日程agenda) is the most difficult work in the world.5,_____(看电影) is my favorite passtime.
Fill in the blanks with the words given below. Change the form where necessary. Each word can be used only once.comparable reliable contrast significant commit decrease indicate Conventional controversial abandon1 They are such a _____ family – they must have been shocked when their son dyed his hair pink.2 Students who worked more than 20 hours a week weekly were not _____ to their classmates.3 The study _____ that a large number of students are at risk of damaging their school careers with their part-time jobs.4 I had to_____ one of my email accounts(账号) as it was filled with junk mail.5 Energy consumption shall_____ by 20% in the next five years.6 In general, Japanese cars are very ______and breakdowns are rare.7 Careful _____of the two plans shows some important differences.8 The army played a ______role in defeating the rebellion.9 We promise to____ time and effort to improving life for people in poor towns.10 And in the law class, we discussed quite a few very interesting and very_____ subjects.
Filling the blanks with given hints.1 Some working students ________(习惯于)spending their earnings on drugs and alcohol.2 According to our studies, alcohol and drug use, in turn, ________(或许与…有关)disengagement from school, and therefore, is likely to depress school performance.3 Working students cut corners by taking easier classes, copying assignments from other students, cutting class, or refusing to do work assigned by their teachers. Over time, as these________,(成了习以为常的做法) students’ commitment to school is eroded bit by bit.4 ________(考虑到)half of all employed seniors, about one-third of all juniors, and about one-fifth of all second-year students work above the 20-hour limit, indications are that a large number of students are at risk of compromising their school careers with their part-time jobs.
下列哪项不属于钢筋与混凝土的粘结力的主要组成()
A. 化学胶结力
B. 摩擦力
C. 骨料断裂力
D. 机械咬合力