题目内容

The statement: 'To test whether elephants exhibit self-awareness, we marked three Asian elephants with white crosses on their foreheads, and then exposed them to a large mirror containing a video camera.’ could be found in the Results section, and contains both Aim statement and Method used to investigate the scientific question posed.‏

A. 对
B. 错

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The phrase ‘as shown in Fig.’ is commonly found in the Discussion section, where it indicates that a result is being summarized for subsequent comparison to the literature.‌

A. 对
B. 错

Before writing your first paper draft, it is useful to create a list of subheadings for each section - it helps to identify logical problems in your manuscript

A. 对
B. 错

下列各对离子用 4 mol∙L-1 NaOH 溶液可以分离的是

A. Cr3+,Fe3+
B. Cr3+,Zn2+
Cu2+,Ag+
D. Zn2+,Al3+

在 Cr2(SO4)3 溶液中 ,加入 Na2S 溶液 ,其主要产物是

A. Cr2S3 + Na2SO4
B. Cr + S
CrO2- + S2-
D. Cr(OH)3 + H2S

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