题干

以下是四位同学对生活中的现象进行探究后的结果的表述,其中不正确的是(  )

A:“纯碱”其实不是碱,属于盐类

B:可用纯碱代替洗涤灵洗涤餐具表面的油污

C:用纯碱可除去面团发酵产生的酸

D:用加水溶解的方法检验纯碱中是否混入了食盐

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答案(点此获取答案解析)

D

同类题3

根据短文理解,选择正确答案。

The Sands of Time

    St Cyrus National Nature Reserve is much more than just golden sands and beautiful flowers. The area has a long human history too. From Stone Age hunters to amazing pioneers, discover the daring deeds and sad stories from St Cyrus' past.

Date: 23rd August 2010

Time. 2 p. m.—3:45 p. m.

Type of event. Guided walk

Between the Tides

    A celebration of the world between the tides. Join local salmon (大马哈鱼) fisherman Jim Ritchie on a fascinating walk to learn how local folk have made a living from the world between the tides, harvesting salmon from the beach at St Cyrus for hundreds of years.

Date: 25th August 2010

Time: 2 p. m.—4 p.m.

Type of event: Family event

Ice & Fire

    St Cyrus National Nature Reserve has had an eventful life! From its days near the equator (赤道) to volcanic eruptions and ice ages. Celebrate the start of Scottish Geology Month with a walk through the reserve and travel back in time to uncover the clues to St Cyrus' past hidden in the cliffs.

Date: 31st August 2010

Time: 2 p. m.—3:45 p. m.

Type of event: Guided walk

Scary Stories

    It's getting darker at nights... it's almost Halloween, when the ghosts (鬼怪) come out to play. Join us for some spooky stories of Dinnet and Deeside long ago... and listen out for things that sound strange in the night!

Date: 25th October 2010

Time: 7 p. m.—9 p. m.

Type of event: Family event

Note:

* All under 18's must be accompanied by an adult

* Pets allowed: No

* Cost: Free

* Phone: 01674­830736

* Location: SNH Visitor Centre, St Cyrus National Nature Reserve