2. 預(yù)習(xí)提綱:
(1) 判斷、證明函數(shù)單調(diào)性的通法;
(2) 判斷、證明函數(shù)奇偶性的通法。
20.I’ve never seen anyone run so fast-______David go.
A.just watch B.just to watch
C.just watching D.just having watched
解析:本題考查非謂語動詞的用法。根據(jù)句子的意思和語境分析,此處應(yīng)該是祈使句型,所以使用動詞原形。
答案:A
19.An excellent idea ______ to me when I woke up this morning.
A.happened B.broke out C.thought of D.occurred
解析:短語occur to sb.表示“(想法、念頭等)想起、浮現(xiàn)”的意思。
答案:D
18.______ that the problem was more than he could deal with,he called the police for help.
A.Having been realized B.To realize
C.Realized D.Realizing
解析:本題考查非謂語動詞作狀語的用法。根據(jù)主句主語he和動詞realize之間的邏輯關(guān)系,此處應(yīng)該表示主動,故可先排除A、C兩個表示被動的選項。B項表示目的,和語境及句子意思不相符。
答案:D
17.You’ve missed your ______ to speak and you have to wait for another round.
A.turn ce C.order D.opportunity
解析:從后面一句話所提供的another round“另一輪次”分析,此處應(yīng)該使用turn。
答案:A
16. Being in no great hurry,______.
A.we went the long route with scenery
B.the long,scenic route was our preference
C.we took the long,scenic route
D.our preference was taking the long,scenic route
解析:本題考查非謂語動詞作狀語時的用法。按照英語句子結(jié)構(gòu)的要求,當(dāng)非謂語動詞作狀語時,其邏輯主語必須和主句的主語一致,所以先排除A、D兩項。而A項的動詞受漢語意思的影響而誤用。
答案:C
15.More and more people choose to shop in a supermarket as it offers a great ______ of goods.
A.variety B.mixture C.attention D.kind
解析:短語a variety of的意思為“豐富多彩的;多種多樣的”。
答案:A
14.I was so badly ill that I couldn’t help ______ the room.
A.clean B.cleaning C.being cleaning D.to be cleaned
解析:根據(jù)語境分析,此處的意思是“病得太重,無法幫助打掃房間”,不要理解為can’t help doing“情不自禁地做某事”。
答案:A
13.We have to ______ the wheat as soon as possible because a storm is on the way.
A.get away B.get across C.get through D.get in
解析:本題考查動詞短語的辨析。短語get in可以表示“收割莊稼”的意思。
答案:D
12.We thought of selling this old furniture,but we’ve decided to ______ it.It might be valuable.
A.hold on to B.keep up with C.turn to D.look after
解析:此題考查短語的正確選用。根據(jù)后句話的意思,此空中應(yīng)填有“留著(not sell)”的意思的詞,故用A項。
答案:A
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