—Shall we go on visit to Shanghai after the exam?
—No. I have to practice playing piano.
—No. I have to practice playing piano.
| A．a; the | B．/; the | C．a; / | D．the; a |
July 1,2011 is our Party’s birthday. It was founded on July 1, 1921.
| A．ninety | B．ninetieth | C．nineteenth | D．ninth |
— I can’t find my new dictionary.
— Is the one on Gary’s desk ?
— Is the one on Gary’s desk ?
| A．ours | B．yours | C．his | D．mine |
将分别标有“6V 9W”和“6V 3W”的两个灯泡L1、L2串联接在12V电源上，则（ ）
| A．两灯都能正常发光 |
| B．灯L2要被烧坏 |
| C．两灯都比正常发光时暗 |
| D．灯L1比灯L2亮 |
有些家用电器在使用过程中，温度过高会损坏电器。下列家用电器中要防止电热产生危害的是（ ）
| A．电饭煲 | B．电热水器 | C．电熨斗 | D．电视机 |
下列生活实例中不属于节约用电的是 （ ）
0 22443 22451 22457 22461 22467 22469 22473 22479 22481 22487 22493 22497 22499 22503 22509 22511 22517 22521 22523 22527 22529 22533 22535 22537 22538 22539 22541 22542 22543 22545 22547 22551 22553 22557 22559 22563 22569 22571 22577 22581 22583 22587 22593 22599 22601 22607 22611 22613 22619 22623 22629 22637 159627
| A．电视机不用时切断电源 | B．离开教室随手关灯 |
| C．夏天用空调时把温度调得很低 | D．尽量少开启电冰箱门 |
