A:Na2S2中硫元素的化合价为﹣2
B:NH4Cl的电子式:
C:S2﹣的结构示意图:
D:COCl2的电子式:
____ ____ keep working hard, you will achieve success.
用所给词的适当形式填空 1. She wants ____(read) a book.2. Her keys ____ (be) on the dresser.3. Are ____(that) oranges?4. Jim and Tom ____ (have ) a basketball.5. He has four ____(watch).6. Please take the books to ____ (they).7. Jim____(not play) sports every day.8. ____ (thank) for your help.9. This book is very ____(interest).10. My father ____ (need) a new bike.
2012年6月2日至5日,白金汉宫举办专场音乐会等系列活动,庆祝英国女皇伊丽莎白二世登基60周年,英国王室再次成为世人瞩目的焦点。哪部法律颁布后,英国国王实权逐渐削弱( )
=____