在已平衡的天平两边分别放一个等质量的烧杯,烧杯中装有等质量、等质量分数的足量稀盐酸,在左边烧杯中加入5.6g金属铁,在右边烧杯中加入5.5g镁和铜的混合物,充分反应后天平仍然保持平衡,则右边烧杯中加入的混合物中镁和铜的质量比为( )
A.36:19B.12:43C.24:31D.13:42
Jane is very thirsty, so she needs some .( )
water
bread
cakes
rice
Our National Day is on first day in October.( )
a;the
the; a
the;不填
a;不填
﹣Mr. Wang, please speak loudly in the hall to make yourself _______ while ________are there.
﹣Fine, thanks for telling me about that.( )
understood, others
understand, other
understand, others
understanding, other
﹣My father __________ to his workplace by bus, but now he __________there by bike.
﹣Really? You have an environmentally﹣friendly father.( )
used to go, is used to go
used to going, is used to go
is used to go, is used to going
used to go, is used to going
﹣What time do you get up in the morning on school days?
﹣I get up at 7:00 every morning to avoid __________the early bus.( )
miss
missed
missing
to miss