339 000 000用科学记数法表示为( )
| A. | B. | C. | D. |
计算2m2n-3m2n的结果为( )
| A.-1 | B. | C.-m2n | D.-6m4n2 |
下列等式不成立的是( )
| A. | B. | C. | D. |
由方程组
可得出x与y的关系式是( )
| A.x+y="9" | B.x+y=3 |
| C.x+y=-3 | D.x+y=-9 |
若
,则下列不等式成立的是( )
| A. | B. | C. | D. |
I’m determined to be a teacher in the future, following _________ my father’s footsteps.
| A.along | B.in | C.on | D.by |
Many Chinese universities provide scholarships for students _____financial aid.
| A.in favor of | B.in honor of | C.in face of | D.in need of |
It is generally believed that _____ study, we can gain both knowledge and skills.
| A.with | B.through | C.by | D.at |
The research showed beyond that smoking contributes to heart disease.
0 112531 112539 112545 112549 112555 112557 112561 112567 112569 112575 112581 112585 112587 112591 112597 112599 112605 112609 112611 112615 112617 112621 112623 112625 112626 112627 112629 112630 112631 112633 112635 112639 112641 112645 112647 112651 112657 112659 112665 112669 112671 112675 112681 112687 112689 112695 112699 112701 112707 112711 112717 112725 366461
| A.reach | B.power | C.doubt | D.problem |