Ⅰ.单句语法填空
1．The plant Professor Li is studying exists (exist) only in Australia.
2．The course is designed to help students to understand the structure of those two systems (system)．
3．Scientists developed several theories (theory) on what else might determine which hand you write with.
4．Because of the violent (violence) wind, many people couldn't go to work.
5．The fouryearold Russian girl has drawn global (globe) attention for her great gift for languages.
6．Unlike (like) the tradition in the West, the family name in China is put first, which is followed by the given name.
7．The air is harmful (harm) to health, so you mustn't enter the room.
8．Over the past ten years, Mr. Green has_multiplied (multiply) his money many times.
9．We were puzzled (puzzle) about the sudden disappearance of our guide at that moment.
10．The government is spending billions (billion) of dollars on new rail projects.
