如让你设计一个实验证明光合作用需要叶绿体,应选用
A:用酒精除去叶绿体中叶绿素的叶
B:有白斑的叶
C:不含叶绿体的叶
D:全绿色的叶
读黄河流域图,回答下列问题
①勿以恶小而为之
②要有知耻之心,反思自己、端正自己的行为
③不断提高辨别是非善恶的能力
④加强自我监控,增强自控能力
2014年是中法建交50周年,中法关系是当今世界最重要的双边关系之一。回答下题。( )
当地时间3月27日,***在巴黎出席中法建交50周年纪念大会时指出,中方愿意同法方一道,寻找更多利益契合点,深化合作,让中法关系更加紧密、更加持久、更加特殊。这说明
①中国在国际事务中的代表性和话语权进一步增强 ②中法两国在许多领域存在着共同的国家利益 ③中国注重加强同周边国家的睦邻友好和务实合作 ④中国始终不渝地奉行互利共赢的开放战略
Li Ming is staying with the Wang's family for the weekend.Today it is warm and fine. The family are having dinner in the garden. They often have dinner in the garden on a warm and fine spring day. Now Mr. and Mrs. Wang are sitting at the table with Li Ming under a tree."It's great to have dinner out here on such a lovely day," Mrs. Wang says. "What's the weather like in your hometown, Li Ming?"Mr. Wang asks. "It's not very warm in spring. But I like the spring there best." "Help yourself to some cakes, Li Ming," Mrs. Wang says. "Thanks," says Li Ming. "The cakes are very nice. I enjoy the dinner very much."