I.单词记忆[核心速记]1.____(v.&.n.)打算;计划2.____(v&n)希望3.____(v)发生;出现4.____(v)预料;期待5.____(n)文化;文明6.____(adj.)著名的;出名的7.____(v)出现
举一反三
- 4 、反应 2N 2 O 5 4NO 2 + O 2 , v (N 2 O 5 ) 、 v (NO 2 ) 、 v (O 2 ) 之间关系正确的是 .. (A) v (N 2 O 5 ) / 2 = v (NO 2 ) / 4 = v (O 2 ) ; (B) v (N 2 O 5 ) = v (NO 2 ) = v (O 2 ) ; (C) 2 v (N 2 O 5 ) = 4 v (NO 2 ) = v (O 2 ) ; (D) 2 v (N 2 O 5 ) = 4 v (NO 2 ) + v (O 2 ) 。/js/editor20131024/themes/default/images/spacer.gif
- 1 Write the missing parts of speech. ► dirty ADJ dirt N 1 dusty ADJ ____ N 2 mud N ____ ADJ 3 greasy ADJ ____ N 4 vacuum cleaner N ____ V
- 1 Complete the words. ► o u t s t a n d i n g outstanding 1 e_ _ _ v a l e n t ____ 2 _ _ _ d u c e ____ 3 _ _ _ p o r t i n g r o _ _ ____ 4 _ _ _ i v i d u a l ____ 5 a _ _ r d ____ 6 a c _ _ e v e ____ 7 w_ _ n _ r ____ 8 p _ _ z e ____
- php $v=1; for($i=1;$i<=3;$i++){ while($v<5){ $v++; if($v==4){ break 2; } echo $v; } }
- 将文法G[V]改造成为LL(1)的。 G[V]:V→N|N[E] E→V|V+E N→i改造结果为: A: G′[V]:V→NA A→[E] E→VB B→+E N→i B: G′[V]:V→NA A→ε|[E] E→VB B→+E N→i C: G′[V]:V→NA A→ε|[E] E→VB B→ε|+E N→i D: G′[V]:V→NA A→ε|[E] E→VB B→ε|+E