下列说法中正确的是() A. 处于最低能量的原子叫做基态原子 B. 3s2表示3s能级有两个轨道 C. 同一原子中,1s、2s、3s电子的能量逐渐
下表是国家对“饮酒驾车”和“醉酒驾车”的界定标准: 白酒、红酒和啤酒中均含有乙醇(俗称酒精,化学式为C2H5OH),饮酒后酒精可进入人体血液中。
Though _______ focus from work to family, the 34-year-old actress refuses to be a full-time housewife. A. having shifted B. to have shifted C. shifted D. being shif
If I _______ you, I ________ on holiday for a rest. A. were; would go B. was; would go C. were; will go D. was; will go
如图为一直角三角形纸片,∠C=90°,两直角边AC=6㎝,BC=8㎝,现将直角边AC沿直线AD折叠,使它落在斜边AB上,且与AE重合,求CD的长
The bus rolled into the valley, _______ over 20 deaths. A. caused B. having caused C. causing D. to cause
The bad weather _____ our difficulties. A. added to B. was added to C. added up D. added up to
“对美国政府有利的事就是对通用公司有利”是流行于20世纪50年代美国的谚语。这则谚语揭示了( ) A.大企业与国家政权关系密切 B.全球化是