题干
Tom owns _______larger collection of _______ books than any other student in our class.
A：the; /
B：a; /
C：a; the
D：/; the
答案(点此获取答案解析）
B
A：the; /
B：a; /
C：a; the
D：/; the
CO2(g) +H2(g)；△H=－43kJ·mol－1对于上述反应，下列措施中能提高CO转化率的是