I was very tired. I had to rest a few hours. [ ]
A. in
B. with
C. for
D. about
答案:C
《招标拍卖挂牌出让国有建设用地使用权规定》规定,商业、旅游、娱乐和商品住宅用地,必须采取拍卖、招标或者挂牌方式出让。
ONPG是测定细菌的()
A.乳糖酶
B.半乳糖苷酶
C.乳糖渗透酶
D.β-半乳糖苷酶
E.β-半乳糖苷渗透酶