单项选择题

以下关于超纯水说法不正确的是()。

A.选择哪一种超纯水进行实验需要根据实验需求进行确定
B.超纯水的水越纯,电阻率越小
C.超纯水在总有机物、细菌、内毒素等指标方面并不相同
D.超纯水的标准水电阻率为18.2兆欧厘米
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问答题

A.      Look at the task in the box, then complete the sample writing with words from the given list.
    
The graph below   shows the number of visitors to three seaside towns over a five-month period.
 
    Summarize the information by selecting   and reporting the main features, and make comparisons where relevant.

A rose           B fluctuated         C upward     D   constant    E gradually
F go              G peaked             H slightly      I declined     J   dramatically
 
Sample Writing:
The graph shows how many people visited three seaside towns between April and August.
The number of visitors to Seahaven increased [填空1] ______ between April and June, then [填空2] _______ sharply in July, and continued to [填空3] _______ up in August. For the first four months, visitor numbers to Bridgeport [填空4] _______, but then[填空5] ________  [填空6] __________ in the final month. Westhampton visitor numbers remained [填空7] ________ from April to June, then increased [填空8] ______ in July and finally [填空9] _______ at 11,000 in August.
Overall, there was an [填空10] ______ trend in the number of visitors to Seahaven and Westhampton, but a downward trend in the number of people visiting Bridgeport.

答案: 第1空:E  第2空:A  第3空:F  第4空:B  第5空:I  第6空:J  第7空:D  第8空:H  第9空:...
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