皮皮学，免费搜题
登录
搜题
【单选题】
下列有关基因突变的叙述中，不正确的是 [ ]A.
基因突变在自然界中广泛存在
B.
基因突变的突变率很低
C.
基因突变都是有利的
D.
基因突变可以产生新的基因
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】冻干法属于物理脱水,其工作原理主要依据__________。
【单选题】Why don’t you introduce me the one _______ attended the party yesterday?
A.
what
B.
whose
C.
who
【单选题】What is the role of Paragraph One in the development of the topic?
A.
To introduce a feature that the following paragraphs will deal with in detail.
B.
To describe the beginning of a story that the passage is going to reveal.
C.
To offer supporting evidence to the following paragraphs.
D.
To provide a contrast to the following paragraphs.
【单选题】If you are to introduce one person to another, which of the following is INCORRECT?
A.
You would introduce a lady to a gentleman.
B.
You would introduce a junior executive to a senior executive.
C.
You would introduce a younger person to an older person.
D.
You would introduce a peer in your company to a peer in another company.
【简答题】The examiners introduce themselves and then one examiner asks you and your partner to say your names and spell them. This examiner then asks you questions about yourself, your daily life, interests, e...
相关题目：