题干
—In order to give more chances to the talented students, an dancing competition ______ soon.
—That's great!
A：will be held
B：is held
C：was held
答案(点此获取答案解析）
A
人向右匀速推动水平桌面上的长木板，木板露出桌面后，在木板翻离桌面以前，则
确表示高等动物胚胎发育顺序的是（ ）