We put some ___________ on the table.[ ]
A. dish
B. dishes
C. dishs
答案:B
Smoking is a very bad habit. First of all, Cigarettes are expensive. Smokers have to 小题1: a lot of money buying them. That is a 小题2: (浪费) of money. Smoking is bad for smokers’ h 小题3: . It may be responsible for many d 小题4: . Even worse, it is harmful to people 小题5: them. It is said that smoking is one of the ways to (引起) cancer. Second, there can be fires 小题6: can result in a great loss of life and property because of a smoker’s (粗心). 小题7: , we are teenagers and have no income. We have no right to do that. It will be even worse if we f 小题8: into bad habits.
关于屋架的说法正确的是( )。
A.屋盖跨越的距离在18m以上,屋盖承重构件采用屋面大梁(简支梁)
B.施工制作简单,施工技术要求不高,适应性强
C.屋架的受力特点为节点荷载,所有杆件只受拉力和压力
D.我国的预应力混凝土屋架的跨度已达80多米