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【单选题】
该化合物【图片】按系统命名法2017中的建议的主链及编号选择中正确的是：（ ）A.
6-氰基-1-二甲胺基-5-甲基-4-硝基-己-2-酮 6-cyano-1-dimethylamino-5-methyl-4-nitrohex-2-one
B.
5-甲基-1-二甲胺基-6-氰基-4-硝基己-2-酮 5-methyl -1-dimethylamino-6-cyano-4-nitrohex-2-one
C.
7-二甲氨基-3-甲基-4-硝基-6-氧亚基腈 7-(dimethylamino)-3-methyl-4-nitro-6-oxoheptanenitrile
D.
3-甲基-7-二甲氨基-4-硝基-6-氧亚基腈 3-methyl-7-(dimethylamino)- 4-nitro-6-oxoheptanenitrile
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【单选题】When the letter n come before g or k, it is pronounced as /ŋ/ as in strong, bang, thank, drink. However, when g is followed by e or i, the letter n is read as /n/ as in strange, stranger, arrange, lon...
A.
/ʃ/
B.
/ʒ/
C.
/ ʤ /
D.
/ ʧ /
【简答题】/n/or/ŋ/
【简答题】News 2 Vocabulary 1. rattle off: to say or read aloud very quickly a list of names or items, or something you have learned 2. autobiography /ˌɔːtəbaɪˈɒgrəfɪ/ n. a book about a person's life, written b...
【多选题】以下关于对联的说法正确的是( )。
A.
要字数相等，断句一致
B.
要平仄相合，音调和谐
C.
张帖的对联一般都是竖写
D.
上联在左边，下联在右边
E.
要词性相对，位置相同
【判断题】In English, syllabic consonants occur when /l, n/ or /m, ŋ/ (standing as the peak of the syllable instead of the vowel) follows a homorganic (i.e., the same place of articulation) plosive (or occasion...
A.
正确
B.
错误
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