American Thanksgiving Day, ______  falls on November 28 this year, is becoming increasingly popular in China.

A．that

B．when

C．which

D．what

糖酵解中催化不可逆反应的酶有（）

A.葡萄糖-6-磷酸酶

B.磷酸烯醇式丙酮酸羧激酶

C.异柠檬酸脱氢酶

D.苹果酸脱氢酶

E.己糖激酶