题目

下列能正确表示DNA片段的示意图是 答案：D二、完形填空Many people think the more time is spent, the more work will be done. So students have to spend the whole_____doing school work except the three meals. It is ______ to see students struggling in a sea of school work except work both at school and at home. Modern students usually have many_____ They love music and sports. They like reading and watching TV. A two-day weekend can get them _____ from too much school work. And they can do what they like. But still teachers don’t think about it _____ they have too much school work, they have no time to enjoy themselves. Students are really tired of their weekend homework .So they usually don’t do their weekend homework_____Sunday night And there is not enough time but much work; students have to finish it carelessly. The____weekend homework makes teachers angry Things always get_____without right ideas. Too much school work makes students lose interest in learning It’s also bad for their health. A horse runs faster after a _____. But for students only rest is not enough. So such a condition should be ______ to give students both pleasure and knowledge. Please give students less homework but leave them more free time.1.A. day B. morning C. afternoon D. week2.A. never B. common C. glad D. hardly3.A. books B. interests C. sports D. friends4.A. busy B. pleased C. away D. tired5.A. for B. with C. though D. because6.A. until B. when C. at D. on7.A. good B. poor C. careful D. happy8.A. better B. afraid C. worse D. wonderful9.A. minute B. moment C. meal D. rest10.A. kept B. changed C. same D. different