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【单选题】
下列对生物多样性的叙述中，不恰当的是 [     ]
A.
生物多样性有利于维持生态系统的平衡
B.
生物多样性可以陶冶人们的情操，美化人们的生活
C.
生物多样性为人类提供了食物、纤维、建筑材料、药物及其他工业原料
D.
生物多样性可以提高人们的生活水平
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举一反三
【单选题】色光的三原色是（　　）
A.
红、绿、蓝三种
B.
红、黄、蓝三种
C.
红、绿、黄三种
D.
绿、黄、蓝三种
查看完整题目与答案
【判断题】心肌病可分为扩张型、缩小 型、限制型和未定型 4种类型。
A.
正确
B.
错误
查看完整题目与答案
【单选题】下列与光现象有关的说法中错误的是( ) A .手影是根据光的直线传播形成的 B .老花镜的镜片是用凸透镜制成的 C .照相机利用了凸透镜能成倒立缩小的虚像的原理 D .色光的三原色是红、绿、蓝
A.
B.
C.
D.
D
查看完整题目与答案
【单选题】血液循环中实现物质交换的是:
A.
微动脉
B.
真毛细血管网
C.
动静脉吻合支
D.
微静脉
E.
毛细血管前括约肌
查看完整题目与答案
【单选题】Paul was feeling a bit ____ then, for he had no friends.
A.
active
B.
lone
C.
lonely
D.
selfish
查看完整题目与答案
【简答题】如图(a)所示电路，已知U s =2V，R 1 =R 2 =2Ω，非线性电阻的伏安特性为i=f(u)=2u 2 (u＞0)。
查看完整题目与答案
【单选题】色光的三原色是 [     ]
A.
红、黄、蓝
B.
红、绿、蓝
C.
红、黄、绿
D.
黄、绿、蓝
查看完整题目与答案
【单选题】He was by nature a sociable, chatty man and he had reckoned that his action would () produce conversation
A.
infallibly
B.
bounced
C.
concentrate
D.
acclamation
查看完整题目与答案
【单选题】Passage two ( 1 ) PAUL was dissatisfied with himself and with everything. The deepest of his love belonged to his mother. When he felt he had hurt her, or wounded his love for her, he could not bear i...
A.
. indifferent
B.
. desperate
C.
pessimistic
D.
ambiguous
查看完整题目与答案
【简答题】Paul was feeling a bit ____ then, for he had no friends.A. active B. lone C. lonely D. selfish
查看完整题目与答案
相关题目：
【单选题】色光的三原色是（　　）
A.
红、绿、蓝三种
B.
红、黄、蓝三种
C.
红、绿、黄三种
D.
绿、黄、蓝三种
查看完整题目与答案
【判断题】心肌病可分为扩张型、缩小 型、限制型和未定型 4种类型。
A.
正确
B.
错误
查看完整题目与答案
【单选题】下列与光现象有关的说法中错误的是( ) A .手影是根据光的直线传播形成的 B .老花镜的镜片是用凸透镜制成的 C .照相机利用了凸透镜能成倒立缩小的虚像的原理 D .色光的三原色是红、绿、蓝
A.
B.
C.
D.
D
查看完整题目与答案
【单选题】血液循环中实现物质交换的是:
A.
微动脉
B.
真毛细血管网
C.
动静脉吻合支
D.
微静脉
E.
毛细血管前括约肌
查看完整题目与答案
【单选题】Paul was feeling a bit ____ then, for he had no friends.
A.
active
B.
lone
C.
lonely
D.
selfish
查看完整题目与答案
【简答题】如图(a)所示电路，已知U s =2V，R 1 =R 2 =2Ω，非线性电阻的伏安特性为i=f(u)=2u 2 (u＞0)。
查看完整题目与答案
【单选题】色光的三原色是 [     ]
A.
红、黄、蓝
B.
红、绿、蓝
C.
红、黄、绿
D.
黄、绿、蓝
查看完整题目与答案
【单选题】He was by nature a sociable, chatty man and he had reckoned that his action would () produce conversation
A.
infallibly
B.
bounced
C.
concentrate
D.
acclamation
查看完整题目与答案
【单选题】Passage two ( 1 ) PAUL was dissatisfied with himself and with everything. The deepest of his love belonged to his mother. When he felt he had hurt her, or wounded his love for her, he could not bear i...
A.
. indifferent
B.
. desperate
C.
pessimistic
D.
ambiguous
查看完整题目与答案
【简答题】Paul was feeling a bit ____ then, for he had no friends.A. active B. lone C. lonely D. selfish
查看完整题目与答案