第1题:
第2题:
get themselves interested in the sights around
enjoy several unusual and exciting activities
have a wonderful surf on the south of the beach
call the lifeguards during bathing period
第3题:
1940
1941
1945
1948
第4题:
扫地时灰尘飞舞能说明分子在做无规则运动
海绵容易被压缩能说明分子间有空隙
在探索比分子更小的微观粒子的历程中,人们首先发现了质子
宇宙是一个有层次的天体结构系统,它是有起源的、膨胀的和演化的
第5题:
does
did
has done
will do
第6题:
had handed
should have handed
handed
hand
第7题:
第8题:
C4H10
C2H4
C4H8
C6H6
第9题:
wore
put
sent
dressed
第10题:
not be absent
not to absent
not to be absent
not absenting