皮皮学，免费搜题
登录
搜题
【判断题】
电子商务经营者,是指通过互联网等信息网络从事销售商品或者提供服务的经营活动的自然人、法人和非法人组织,包括电子商务平台经营者、平台内经营者以及通过自建网站、其他网络服务销售商品或者提供服务的电子商务经营者。( )A.
正确
B.
错误
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
【简答题】A．They want to stay home and do the housework. B．They have too much work and not much free time. C．They don't have enough money. D．They have more than in the past.
【单选题】Too much work and too little rest ____ to his illness.
A.
causes
B.
forms
C.
leads
D.
makes
【单选题】Too much work and too little rest bad health.
A.
lead to
B.
leads to
C.
result in
D.
result from
【单选题】Too much work and too little rest often( ) illness.
A.
used to
B.
lead to
C.
object to
D.
stick to
【简答题】短周期的四种主族元素W、X、Y、Z，原子序数依次减小，四种元素的原子核外电子层数之和为8。X元素的原子最外层电子数等于Y和Z两元素的原子最外层电子数之和。W元素和Y元素的原子最外层上的电子数分别是各自电子层数的2倍，X和Z可以形成XZ 3 的化合物。 （1）写元素名称： X______，Y______Z_______ ，W在周期表的位置是：_______ （2）（XZ 4 ） 2 W的电子式___...
【简答题】Too much work and too little rest often leads to (ill) ______.
【简答题】Too much work and too little rest was led to his uncle’s death . A B C D
相关题目：