【单选题】
Scientists are learning more about our need for sleep. Most people sleep{{U}} (26) {{/U}}eight hours each night.{{U}} (27) {{/U}}people sleep more than{{U}} (28) {{/U}}and others sleep as{{U}} (29) {{/U}}as two or three hours each night. Scientists do not know exactly{{U}} (30) {{/U}}some people sleep more than others.Dr.Ernest Hartman has a (an){{U}} (31) {{/U}}about this. He believes that the{{U}} (32) {{/U}}of sleep depends on how a person{{U}} (33) {{/U}}problems. He said people who need only a few{{U}} (34) {{/U}}sleep usually are people who have much energy and make good use of{{U}} (35) {{/U}}to get their work to be done quickly.{{U}} (36) {{/U}}he said many people who sleep longer than normal do creative work and seem to need{{U}} (37) {{/U}}dreaming time to find solution{{U}} (38) {{/U}}emotional problems. Some scientists agree{{U}} (39) {{/U}}this idea and others dispute.
To determine the{{U}} (40) {{/U}}of the lack of sleep, scientists have put{{U}} (41) {{/U}}through a set of psychological and performance tests{{U}} (42) {{/U}}them, for instance, to add columns of numbers or recite a passage read to them only minutes earlier, "We’ve found that if you’re in sleep{{U}} (43) {{/U}}, performance suffers," saysDr.DaviD、"Short-term memory is{{U}} (44) {{/U}},{{U}} (45) {{/U}}are abilities to make decisions and to concentrate."
A．helping
B．forcing
C．requiring
D．allowing
网考网参考答案：C
网考网解析：本题考查的动词的词义辨析。help“帮助”；force“强迫”；require“要求”； allow“允许”。联系下文，可知“这些实验要求实验对象做数学题或背诵文章”。所以C项为本题的正确答案。
document.getElementById("warp").style.display="none";
document.getElementById("content").style.display="block";
查看试题解析出处>>
发布评论 查看全部评论