【单选题】【消耗次数：1】
The milk has turned ( ).
①
soar
②
sour
③
soup
④
soap
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相关题目
【单选题】
—Do you prefer coffee ___ milk? — I prefer milk ___ coffee. It is good for our health.
①
?to; to
②
?or; or
③
?or; to
④
?to; and
【单选题】
Doctor: ____ Patient: I’ve caught a bad cold and got a sour throat.?
①
What seems to be the problem? ?
②
?Do you have anything to declare, sir??
③
Good morning. May I help you? ?
④
How have you been getting along recently??
【单选题】
It turned out that the children were not _____for the accident.
①
to blame
②
to be blamed
③
to be blaming
④
to have been blaming
【单选题】
A: Honey, there is little milk in the fridge. B: [填空]
①
OK, ok. Ill go to the store right now.
②
Yes, honey. Let me know what I can do.
③
Whats missing, dear?
④
Sure, Ill get more next time.
【单选题】
You should have put the milk into the icebox, I expect it ____ undrinkable.
①
became
②
had become
③
has become
④
becomes
随机题目
【单选题】
1.下列哪项叙述符合脂肪酸的β氧化：
①
A．仅在线粒体中进行
②
B．产生的NADPH用于合成脂肪酸
③
C．被胞浆酶催化
④
D．产生的NADPH用于葡萄糖转变成丙酮酸
⑤
E．需要酰基载体蛋白参与
【单选题】
9、缺氧情况下,糖酵解途径生成的NADH+ H+的去路
①
a 进入呼吸链氧化供能;
②
b 丙酮酸还原成乳酸;
③
c 3—磷酸甘油酸还原成3—磷酸甘油醛;
④
d醛缩酶的辅助因子合成1,6—二磷酸果糖;
⑤
e醛缩酶的辅助因子分解成1,6—二磷酸果糖。
【单选题】
8、底物水平磷酸化指
①
ATP水解为ADP和无机磷
②
底物经分子重排后形成高能磷酸键,经磷酸基团转移使ADP磷酸化为ATP
③
呼吸链上H传递过程中释放能量使ADP磷酸化形成ATP
④
使底物分子加上一个磷酸根;
⑤
e 使底物分子水解掉一个ATP
【单选题】
4、糖酵解的脱氢步骤反应是
①
a 1,6—二磷酸果糖→3—磷酸甘油醛+磷酸二羟丙酮
②
b 3—磷酸甘油醛→磷酸二羟丙酮
③
c 3—磷酸甘油醛→1,3—二磷酸甘油酸
④
d 1,3—二磷酸甘油酸→3—磷酸甘油酸
⑤
e 3—磷酸甘油酸→2—磷酸甘油酸。