问题 单项选择题

细菌对糖的分解是将多糖分解成丙酮酸。需氧菌则经过()过程,进一步将丙酮酸分解成H2O和CO2

A、发酵

B、氧化

C、三羧酸循环

D、EP途径

答案

参考答案:C

单项选择题 A1/A2型题
完形填空

The trip to that city was eye-opening for everyone, and near its end , all the young people in our group began to reflect on what it had meant. We __21__ the first night we had arrived. We had all gone into the markets of the city __22__ the young people could experience its energy. But what we actually saw simply   23 us all –the rundown houses, the children in rags, the people begging for money… Walking home,  24  under a low bridge, we came across  25  families of homeless people seeking a bit of dry ground to sleep on  26  he night. We had to step over bodies as we found our way through the darkness.

The poverty(贫困) was  27  than anything my young companions had ever imagined. Back in the hotel, an air of sadness settled over the group. Many  28  and cried. Spending time in this  29  moves a person to care about humanity.

That evening, our group spent hours talking about what we had  30  . Gently, I encouraged everyone to talk about the difficult  31  that day’s discoveries had inspired. Sitting together  32  a circle as everyone had a chance to speak, we all began to realize that  33  of us was alone in our struggle to cope with our reactions.

Based on my  34  in poverty-stricken areas, I suggested that  35  the emotions we had were painful, they could also be important in helping us to move forward. We all  36  that we had seen things that should never be allowed to happen.  37  , what could we do about it? Together, we began to brainstorm ways we could help to ease the  38  we had seen. As I encouraged group members to focus on  39  they could do, a sense of determination  40  the previous sadness. Instead of despair, these young people began to feel a call to action.

21.A.put up with       B.got back to      C.looked back on      D.made up for

22.A.now that         B.so that          C.as if              D.even if

23.A.puzzled          B.annoyed          C.embarrassed        D.shocked

24.A.marching         B.running          C.passing            D.moving

25.A.entire           B.normal          C.average            D.general

26.A.beyond           B.with             C.till                D.for

27.A.stronger         B.deeper           C.worse               D.less

28.A.gave up          B.broke down       C.set off             D.held on

29.A.environment       B.hotel             C.house               D.background

30.A.inspected         B.attempted        C.witnessed         D.challenged

31.A.feelings          B.decisions         C.thoughts          D.impressions

32.A.along            B.around           C.by                 D.in

33.A.neither           B.either            C.none             D.each

34.A.experiences       B.schedules         C.data             D.position

35.A.once             B.while            C.since             D.unless

36.A.supposed         B.advised           C.confirmed         D.agreed

37.A.Surely           B.Rather            C.Now               D.Indeed

38.A.burden           B.suffering          C.anxiety          D.difficulty

39.A.how             B.where           C.what                D.when

40.A.replaced          B.changed          C.covered          D.improved