皮皮学，免费搜题
登录
搜题
【单选题】
“中华龙鸟”的皮肤据观察是一种皮下的()组织。A.
弹性纤维
B.
网状纤维
C.
胶原纤维
D.
粘胶纤维
拍照语音搜题，微信中搜索"皮皮学"使用
参考答案：
参考解析：
知识点：
皮皮学刷刷变学霸
举一反三
【单选题】Jill: Jack, do you manage to continue playing sports? Jack: No. By the time I get home at night, it is always too late to do any training. Besides, I always have so much homework to do. Why does Jack ...
A.
He is too busy.
B.
He has lost the interest.
C.
The training is too hard.
D.
He always has so much housework to do.
【单选题】熔断器在电路中起到()保护的作用,热继电器在电路中起到()保护作用,接触器在电路中起到()保护作用
A.
过载，欠压，短路
B.
过载，过载，短路
C.
短路，过载，欠压
D.
短路，欠压，过载
【简答题】根据句意和首字母提示每空填一个单词，使句意完整。 1. Jack plays sports every day, so he is very h_______. 2. Jane t_______ her mother is at home now. 3. My father is very s_______ with me. 4. What do you o_______ do? 5. We ar...
【简答题】根据句意及单词的首字母完成句子。 1. Jack is always late for schoo1,so his teacher is m at him. 2. He left a m on the table. Did you see it? 3. What other l sides Chinese? 4. She said she was having a s party for her ...
【简答题】Jack ___1___in Canada. His father___2___a big shop and his mother is a teacher. He is six years old and ___3___to go to school this year. It’s ___4___far from their home, and his father drives a car t...
相关题目：