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【单选题】
Look. Lucy is_____ a new bike today. A. jumping B. running C. D 2. The children _____ football. A. is playing B. are playing C. play the D. play a 3. They ______TV in the evening. They do their homework. A. are watching B. can't watching C. don't watch D. don't watching 4. Listen! She____ in the classroom. A. is singing B. sing C .to sing D. is sing 5. ______are you eating? I'm eating ______ meat. A. What,some B. Which,any C. Where,not D. What,a 6. Is she ____ something? A. eat B. eating C. eatting D. eats 7. I can't catch up with the fashion,because the clothes style_______ all the time. A. has changed B. is changed C. is changing D. changed 8.Look! The children_______ basketball on the playground. A. plays B. played C. is playing D. are playing 9.Jack and Ketty_______ in the lake. Let's join them,shall we? A. swim B. have swum C. swam D. are swimming 10.It's six in the afternoon. The Greens_______ lunch together. A. has B. are having C. have had D. had had
A.
jumping
B.
riding
C.
takeing
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【单选题】古蔡氏检砷法测砷时,砷化氢气体与下列那种物质作用生成砷斑
A.
氯化汞
B.
溴化汞
C.
碘化汞
D.
硫化汞
E.
氧化汞
【单选题】古蔡氏检砷法测砷时,砷化氢气体与下列那种物质作用生成砷斑
A.
氯化汞
B.
溴化汞
C.
碘化汞
D.
硫化汞
【单选题】古蔡氏检砷法测砷时,砷化氢气体与下列那种物质作用生成砷斑
A.
氯化汞
B.
碘化汞
C.
硫化汞
D.
溴化汞
【单选题】短三瓦滑动轴承球头螺钉的球部和轴瓦的凹坑经过配研,接触面不少于( )。
A.
50%
B.
60%
C.
65%
D.
80%
【简答题】present perform come alive matter recall convince lighten up bound for assume eager The children were ______ to see the performance.
【单选题】Marcus has been unkind to me today.
A.
most
B.
mostly
【单选题】We can infer from the last paragraph that
A.
Neiman Marcus has just decided to transit to the Web.
B.
online sales are the sole source of Neiman Marcus' revenue.
C.
the total sales of Breitling has increased in spite of less catalogs since 2002.
D.
Prada does not need a Web site at all.
【简答题】近年来,我国大力倡导“低能耗、低污染、低排放”等低碳行动,低碳理念正逐渐深入人心。如图表示目前某市碳循环的实际情况,请分析回答: (1)从图中可以看出,____是碳循环的重要纽带,因为它能将大气中的二氧化碳转化为氧气和____,进而通过多条途径进行碳循环。 (2)正常情况下,碳会以有机物的形式通过图中食物链进行传递,伴随着碳的传递,能量沿着食物链流动的特点是____。 (3)动植物遗体和排出物中含...
【简答题】present perform come alive matter recall convince lighten up bound for assume eager He put her aboard the ship ______ New York.
【单选题】古蔡氏检砷法测砷时,砷化氢气体与下列那种物质作用生成砷斑
A.
氯化汞
B.
溴化汞
C.
碘化汞
D.
琉化汞
E.
砷化汞
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