1编号：3670题型：单选题测试正确率：58.56%
—How many times have you been here? —This is my ________ visit.
2编号：3669题型：单选题测试正确率：43.86%
—What’s______ over there? —It’s a machine for cutting grass.
3编号：3668题型：单选题测试正确率：75.43%
Sam got up early _______ he was late for school.
4编号：3667题型：单选题测试正确率：81.08%
The students are having an English lesson _____ their classroom.
5编号：3666题型：单选题测试正确率：51.61%
There is ______wrong with him. He just needs a good rest.
6编号：3665题型：单选题测试正确率：91.38%
—Can you lend_______ your pen? I can’t find mine. —Sure. Here you are.
7编号：3664题型：单选题测试正确率：96.9%
—What kind of _______ do you often play with your friends? —Basketball. We often play basketball together.
8编号：3658题型：单选题测试正确率：56.31%
如图，是二次函数的图象，请你根据图中的信息，判断下列4个结论：①abc>0；②b<a+c;③2a+b=0；④a+b>m(am+b)（m≠1）．其中正确的结论有（）
9编号：3657题型：单选题测试正确率：21.36%
已知二次函数y=ax2+bx+c（a≠0）的图象如图所示，有下列结论：①b2-4ac＞0；②abc＞0；③8a+c＞0；④9a+3b+c＜0其中，正确结论的个数是（ ）
10编号：3656题型：单选题测试正确率：24.27%
如图所示的二次函数y=ax2+bx+c的图象中，刘星同学观察得出了下面四条信息：（1）b2-4ac＞0；（2）c＞1；（3）2a-b＜0；（4）a+b+c＜0．你认为其中错误的有（ ）
提醒:
的图象，请你根据图中的信息，判断下列4个结论：①abc>0；②b<a+c;③2a+b=0；④a+b>
