1编号：29484题型：单选题测试正确率：33.19%
绿色植物靠吸收光量子来进行光合作用,已知每个光量子的波长约为0.000 688毫米,则每个光量子的波长可用科学记数法表示为( )
2编号：29483题型：单选题测试正确率：66.57%
下列运算正确的是( )
3编号：29474题型：单选题测试正确率：91.48%
—Is the boy opening the door?— .
4编号：29473题型：单选题测试正确率：89.79%
—What you doing, Bob?—I am learning a Chinese song.
5编号：29472题型：单选题测试正确率：93.48%
— are you doing ,Simon?—I have finished my homework, and now I am playing the computer games.
6编号：29471题型：单选题测试正确率：92.37%
—Alice, turn down the TV, please.I on the phone.—Oh, sorry.
7编号：29470题型：单选题测试正确率：92.79%
—May I speak to Mr. Morgan ?—Sorry. He on the farm.
8编号：29469题型：单选题测试正确率：94.56%
Look! The boy a picture.
9编号：29468题型：单选题测试正确率：95.28%
—What’s your brother doing in his room now?—He a kite.
10编号：29436题型：单选题测试正确率：100.0%
如图,在正方形ABCD中,E为AB边的中点,G,F分别为AD,BC边上的点,GE⊥EF,若AG=3,GF=7,则BF的长为( )
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