25.Please telephone me half an hour _______.A.in charge B.in advance C.in time D.in front26.Both Mary and Ellen,as well as Jan,_______ studying Chinese History....[详细]
122 2024-03-11
20.One of the requirements for a fire is that the material ______ to its burning temperature.A.were heated B.must be heated C.is heated D.be heated21.Please ___...[详细]
163 2024-03-11
15.I asked my teacher _______.A.what courses should I take B.should I take what coursesC.I should take what courses D.what courses I should take16.Comrade Li pr...[详细]
261 2024-03-11
Ⅱ.Vocabulary and Structure(40 points)Directions:There are 40 incomplete sentences in this section.For each sentence there are four choices marked A,B,C and D.Ch...[详细]
323 2024-03-11
Ⅰ.Phonetics(10 points)Directions:In each of the following groups of words,there are four underlined letter combinations marked A,B,C and D.Compare the underline...[详细]
1108 2024-03-11
填空题1、设函数y=sin2x，则y'=_____。2、设函数y=xsinx，则y'=_____。3、设函数y=sinx，则y'=_____。4、设函数ƒ(x)=cosx，则ƒ'(x)=_____。5、设函数y=sin(2x+1)，则y'=_____。6、设x2为f(x)的一个原...[详细]
32 2024-03-11
1.[单选题]从甲地到乙地有2条路可通，从乙地到丙地有3条路可通，从甲地到丁地有4条路可通，从丁地到丙地有2条路可通，那么从甲地到丙地共有()种不同的走法。A6种B8种C14种D48种2[.单选题]袋中有8个乒乓球，其中5个白色球，3个黄色球，一次从中任取2个乒乓球，则取出的2个球均为白色球的概率为()。A.5/8B....[详细]
25 2024-03-11
1[.单选题]函数f(x)在[a，b]上连续是f(x)在该区间上可积的()。A.必要条件，但非充分条件B.充分条件，但非必要条件C.充分必要条件D.非充分条件，亦非必要条件2[.单选题]曲线y=1-x2与x轴所围成的平面图形的面积S=()。A.2B.4/3C.1D.2/33[.单选题]两封信随机地投入标号为1，2，3，...[详细]
42 2024-03-08 
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