【单选题】We don’t have to hurry as the bus for London at five in the evening.
【判断题】在选优良品种时,应在专家的指导下,选用经国家有关部门鉴定的品种,这些品种多来源于科研单位、教学单位和经过国家验收认定的育种场内。
【单选题】—______ Emily is in such a hurry? —I don’t know. She might run to catch the bus.
【单选题】— Hurry up. The bus is coming. — Wait a minute. Don’t cross the street___________the traffic lights change to green. A. until B. after C. while D. since
【单选题】Don’t hurry. The bus won’t start ________ everybody gets on.
【单选题】Everyone was on time for the meeting_____ Chris, who is always 10 minutes late for everthing.
【单选题】下列4种药物中,治疗指数最大的是( )
A.
甲药LD50=45mg/Kg,ED50=15mg/Kg
B.
乙药LD50=100mg/Kg,ED50=50mg/Kg
C.
丙药LD50=500mg/Kg,ED50=250mg/Kg
D.
丁药LD50=50mg/Kg,ED50=10mg/Kg
【单选题】---Hurry up. The bus is coming. ---Wait a minute. Don’t cross the street ___ the traffic light are green.
【简答题】M: Excuse me, but I’d
better 1)______________ . W: Can’t you stay
2)_____________ ? M: No. I’m sorry, but
I really have to go. I’ll 3)____________
if I don’t hurry. W: When does the last
bus go? M...
【单选题】Everyone was on time for the meeting _____ Chris, who is always 10 minutes late for everything.