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【多选题】
用98%的浓硫酸配制1000mL溶质质量分数为20%的稀硫酸（密度为1.14g/mL）．下列说法正确的是（ ）A.
实验中需要用到的玻璃仪器有烧杯、量筒、玻璃棒和胶头滴管等
B.
配制该稀硫酸需要加水800mL
C.
配制时水小心地加入浓硫酸中
D.
该稀硫酸中，溶液质量：溶剂质量=5：4
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【简答题】Life is difficult. It is a great truth because once we truly understand and accept it, then life is no longer difficult. Most do not fully see this truth. Instead they complain about their problems an...
【简答题】Life is difficult. But life is no longer difficult when we truly understand and accept it. Most people do not fully see this truth. Instead, they complain about their problems and difficulties. They t...
【单选题】Life is difficult. It is a great truth because once we truly understand and accept it, then life is no longer difficult. Most do not fully see this truth. Instead they complain about their problems an...
A.
everybody has problems
B.
we become stronger by meeting and solving the problems of life
C.
life is difficult because our problems bring us pain
D.
people like to complain about their problems
【简答题】After the flood, life in the region is (extreme) ______ difficult.
【单选题】________ some students are not aware of is ________ difficult life can be if they are not devoted to study.
A.
That; how
B.
Which; what
C.
What; what
D.
What; how
【简答题】Life is difficult. It is a great truth because once we truly understand and accept it, then life is no longer difficult. Most do not fully see this truth. Instead they complain(抱怨) about their problem...
【简答题】After the flood, life was (extreme) ________ difficult for the farmers in this area.
【单选题】You can't imagine ______ in those days.
A.
how difficult my life was
B.
how my life was difficult
C.
how was my life difficult
D.
my life was how difficult
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