【单选题】无菌检查所用菌种传代次数不得超过( )代。
【单选题】母乳中的营养成分能够满足▁▁▁月内婴儿的需要。
【单选题】已知测者纬度等于35 ºN,天体赤纬等于20 ºS,该天体在周日视运动中:
【简答题】8×9=72,720÷72=10.列成综合算式:______.
【简答题】句型转换。 1. Could you please follow me?(改为否定句) Could you please _______ _______ me? 2. —Would you mind waiting for a little while?(作出回答) —_______ _______ not. 3. This term he is not going to learn French...
【单选题】'8:20' means_____. [ ]
【单选题】He ______for eight hours every day.
【单选题】He ______for eight hours every day.
【单选题】Could you please tell us in Shanghai? [ ]
A.
when will you visit the World Expo
B.
when you will visit the World Expo
C.
when the World Expo will you visit
D.
when the World Expo you will visit
【简答题】宇宙中的天体都在运动着。运动中的天体相互吸引、相互绕转,形成天体系统。天体系统有不同的级别。读图,根据所学知识回答题。 小题1:下列事物中被称为天体的是 A.太阳 B.彩虹 C.飞机 D.银河系 小题2:图中包括的天体系统共有 A.一级 B.二级 C.三级 D.四级