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【单选题】
What did Josephine think Mrs. Mallard was doing in her own room?
A.
She knew Mrs. Mallard was excited at the sad news.
B.
She thought Mrs. Mallard was sleeping at her own room.
C.
She thought Mrs. Mallard was too sad to talk to others.
D.
She thought Mrs. Mallard was celebrating her freedom alone.
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参考答案:
举一反三
【单选题】可以防止染色体末端碱基序列丢失及末端融合的染色体末端重复DNA序列称为
A.
端粒
B.
着丝粒
C.
复制子
D.
复制起点
E.
-5‘帽结构
【判断题】Auxiliary verbs are usually unstressed in a sentence.
A.
正确
B.
错误
【简答题】端粒结构是线性染色体末端特有的结构,下列说法 中 正确的是 ( ) 。 A. 其末端 3 ’ 单链区插入双链 DNA 区,形成 T-loop; B. 人细胞中的端粒重复序列是 5 ’ -TTAGGG-3 ’ ; C .端粒结构有利于防止遗传信息的丢失 ; D . 端粒结构可以防止染色体末端被降解和染色体末端间的相互融合; E. 以上都正确。
【单选题】防止染色体 DNA端区降解和缩短的机制是
A.
重组修复
B.
UVrABC
C.
SOS修复
D.
DNA甲基化修饰
E.
端粒酶的作用
【单选题】_____ is the most frequently used vowel in the unstressed form and next comes / ɪ /.
A.
/ə/
B.
/e/
C.
/ɛ/
D.
/i /
【单选题】Which word has the unstressed /ə/ sound as in another?
A.
http://leicloud.ulearning.cn/course/mediacontent/09101203/lesson-10/audio/lei3_pronunciation3_5.mp3
B.
http://leicloud.ulearning.cn/course/mediacontent/09101203/lesson-10/audio/lei3_pronunciation3_6.mp3
C.
http://leicloud.ulearning.cn/course/mediacontent/09101203/lesson-10/audio/lei3_pronunciation3_7.mp3
D.
http://leicloud.ulearning.cn/course/mediacontent/09101203/lesson-10/audio/lei3_pronunciation3_8.mp3
【判断题】Schwa only appears in unstressed syllables.
A.
正确
B.
错误
【简答题】_______ is the vowel that is most unlikely to occur in an unstressed syllable.
【单选题】染色体中具有防止染色体末端粘着作用的特化部位称为 ______ 。
A.
次缢痕
B.
随体
C.
动粒
D.
端粒
【判断题】The second syllable of the word ‘injury’ is unstressed.
A.
正确
B.
错误
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