．句型轉換（10分）
【小題1】The baby fell asleep when its mother came back. (改為同義句)
The baby ________ fall asleep________ its mother came back.
【小題2】The boy was riding a bike when the UFO landed. (對劃線部分提問)
        was the boy          when the UFO landed?
【小題3】Mr. Wang said to Scott " You are hard-working." (改為間接引語)
Mr. Wang told Scott           ________ hard-working.
【小題4】My uncle will go to Australia on vacation next month. He will have enough time. (合并為含if的復合句)
My uncle will go to Australia on vacation next month _________ he________ enough time.
【小題5】如果我的夢想實現(xiàn)了，我將會有很多錢去幫助窮人。(短語翻譯)
If my dream _________  _________, I will have lots of money to help the poor.

．制造航天飛行器時，在不影響其他技術指標的情況下，應該選用密度______(小／大，下同)的材料，這樣它的質量就比較______，從而有利于升空飛行．

．某容器質量為200 g，裝滿水后總質量是700 g，裝滿某液體時總質量是600g，則該容器的容積為    _________crn³，此液體的密度為___________ kg／m³．