1编号:4149题型:单选题测试正确率:66.4%

如图,长方体的长为15,宽为10,高为20,点B离点C的距离为5,一只蚂蚁如果要沿着长方体的表面从点A爬到点B,需要爬行的最短距离是(      )

2编号:4153题型:单选题测试正确率:59.66%

I met a good friend of mine while I______ on the street.

3编号:4148题型:单选题测试正确率:80.11%

Listen! The phone ______. Please go to answer it.

4编号:4147题型:单选题测试正确率:71.02%

Don't make so much noise. The children ______an English lesson.

5编号:4146题型:单选题测试正确率:64.77%

—I called you at 4:00 yesterday afternoon, but no one answered.
—Sorry, I ______ with my friends at that time.

6编号:4145题型:单选题测试正确率:43.69%

______, everyone should try to protect the environment.

7编号:4144题型:单选题测试正确率:49.43%

Our factory ______ cotton.

8编号:4143题型:单选题测试正确率:81.36%

如图,∠AOC和∠BOD都是直角,如果∠AOB=150°,那么∠COD=(     )

9编号:4142题型:单选题测试正确率:76.7%

从甲地到乙地,公共汽车原需行驶7个小时,开通高速公路后,车速平均每小时增加了20千米,只需5个小时即可到达,则甲、两地的路程为(    )

10编号:4141题型:单选题测试正确率:74.28%

观察下列图形,则第n个图形中,三角形的个数是(     )