皮皮学,免费搜题
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搜题
【简答题】
如图1是草原生态系统中牧草、旅鼠、和狐狸数量变化曲线图,试分析曲线图回答下列问题: (1)写出该生态系统中的食物链______. (2)从三种生物的数量变化和相互关系看说明生态系统具备一定的______能力. (3)如果人们大肆捕杀狐狸,将对草原带来的后果是______. (4)人们为了研究牧草和旅鼠,从牧草的叶肉内和从旅鼠的口腔内分别取出了细胞放在显微镜下观察,根据观察到的图象画出了如图2两幅图:表示牧草叶肉细胞的是图______,两种细胞中都具备的能量转换器是:______,如果经化验测得:两种细胞中都含有农药DDT则图______中含量较多.引起这种现象的原因是______.
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举一反三
【单选题】He smiled at me _____ my help, saying nothing at that moment. [     ]
A.
in respond to
B.
in response to
C.
responded to
D.
responding
【单选题】He smiled_______ me.
A.
at
B.
for
C.
in
D.
with
【多选题】下列词中属于叠韵联绵词的是
A.
玻璃
B.
C.
璀璨
D.
窈窕
【单选题】下列词中,属叠韵联绵词的是( )
A.
嘎巴
B.
徜徉
C.
仅仅
D.
清明
【单选题】I thought he would angry with me, but he smiled.
A.
to my surprise
B.
to my shame
C.
to my regret
D.
to my suspicion
【简答题】He smiled, with the ____that he didn't believe me. (imply)
【单选题】I thought he would be angry with me,but _________ he smiled.
A.
to my surprise
B.
to my shame
C.
to my regret
D.
to my suspicion
【多选题】下列词中属于叠韵联绵词的是()
A.
窈窕
B.
璀璨
C.
玻璃
D.
哆嗦
【简答题】他朝我微笑着,让人感到宽心。 He smiled at me in a way.
【单选题】下列词是非双声叠韵联绵词的有
A.
唠叨
B.
苗条
C.
仓促
D.
妯娌