【单选题】力是物质间的相互作用,下列关于力的描述正确的是?
B.
物质间的相互作用力可以直接接触,也可以不直接接触。
【简答题】How many cyclists will take part in the tour?
【单选题】听力原文:M: How many students took part in the competition? W: About 20, but only 4 got the prize. Q: How many students got the prize? (10)
【多选题】真菌有性繁殖产生的有性孢子类型有( )。
【单选题】How many companies were involved in producing the hydraulic part for the film Titanic?
【单选题】How many companies were involved in producing the hydranlic part for the film Tianic?
【单选题】How many part is the tomb divided in?
【简答题】How many ________(part) are there in this story?