27. I’d appreciate ________ if you could lend me a hand with my homework.
A. so B. it C. that D. you
26. - How did you ______ the movie last night?
-Oh, both interesting and intertwine.
A. find B. consider C. think D. feel
25.No sooner _________ her office _______ the telephone rang, so she turned back to answer it .
A. she had left; than B. she had left; when
C. had she left; than D. had she lift; when
24.He explained to his girlfriend in detail what he ______ doing in the following week to ask for her support .
A. meant B. minded C. intended D. remembered
23.I have always been honest and straightforward ,and it doesn’t matter _______ I’m talking to.
A. Who is it B. Who it is C. it is who D. it is whom
第一节：单项选择(共15个小题。每小题1分；共15分)
ese scientists ________ praising because they have made great progress in their study of DNA and have gained international recognition.
A. need B. examine C. deserve D. measure
22._________ his dream of going to college will come true is uncertain.
A. That B. Whether C. If D. Even if
26．小明将一张矩形纸片沿对角线剪开，得到两张全等直角三角形纸片(如图2)，量得他们的斜边长为10cm，较小锐角为30°，再将这两张三角纸片摆成如图3的形状，使点B、F、D在同一条直线上，F为公共直角顶点。然后小明又将图(3)中的△ABF沿直线AF翻折到图(4)的位置，点B落在FD边上的B1点，AB1交DE于点H。
请你说明：(1)AH=DH.；(2)点H在∠AFD的角平分线上。
25．如图，在△ABC中, D、E分别是AC、AB上的点, BD与CE交于点O. 给出下列三个条件：①∠EBO＝∠DCO；②∠BEO＝∠CDO；③BE＝CD.
(1)上述三个条件中, 哪两个条件可判定△ABC是等腰三角形(用序号写出所有情形)；
(2)选择第⑴小题中的一种情形, 证明△ABC是等腰三角形.
