The purpose of non-REM sleep is even more __43__. Thenew experiments, such as those described for the first time at a recent meetingof the Society for Sleep Research in Minneapolis, suggest fascinatingexplanations __45__ of non-REM sleep. (95)
43. A. subtle B. obvious C. mysterious D. doubtful
45. A. in the light B. by virtue C. with the exceptionD. for the purpose
表示列舉的連詞:first, second, third…;firstly,secondly, thirdly…; first, next, then…; in the first place, in the secondplace…; for one thing, for another thing…;to begin with, to conclude…
表示原因的連詞:because, since, as, now that…
表示結果的連詞:so, therefore, thus, hence,accordingly, consequently, as a result
表示讓步和轉折的連詞:however, nevertheless,nonetheless, still, though, yet, in spite of, at any rate, in any case,whoever, whatever
表示對照的連詞:on the contrary, in contrast, bycontrast, in comparison, by comparison, conversely
表示補充的連詞:also, further, furthermore,likewise, similarly, moreover, in addition, what’s more, too, either, neither,not…but…, not only…but also…
表示時間順序的連詞:when, while, as, after,before, since, until, as soon as, once
表示目的的連詞:that, so that, in order that,lest, for fear that
表示條件的連詞:if, suppose (that), supposing(that), unless, in case, so (as) long as, so far as, on condition (that),provided (that), providing (that)
例如:
Getting enough vitamins is essential to life, althoughthe body has no nutritional use for excess vitamins. Many people ____ believein being on the "safe side" and thus take extra vitamins. (96)
A. nevertheless B. therefore C. moreover D. meanwhile