非碱性水中存在非碳酸盐硬度，此水特征为（）。A、总硬度=总碱度_爱下问搜题

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问题单项选择题

非碱性水中存在非碳酸盐硬度，此水特征为（）。

A、总硬度=总碱度

B、总硬度<总碱度

C、总硬度>总碱度

答案

参考答案：C

完形填空

My 9-year-old daughter and I were flying from our home in Carolina to spend a week with my husband in Florida.We were__ _ about the trip because we hadn't seen him for five months, and __  her Dad terribly.
As usual on the Charlotte-to-Miami flight, the plane was totally__ . Because we did not get our boarding passes until we__  at the gate, Kallie and I could not get seats together and were __  by the aisle（过道）. I asked two passengers in my row if they would switch places with Kallie and me, __  we could be together. They __ , saying they thought they should stay in their assigned seats.
Meanwhile, a mother and her three children were in a _  several rows ahead of us. There had been a mistake in their boarding passes, and _  the whole family had been split up. The passengers in her row_  refused to move elsewhere. She was very__  about the younger boy sitting with strangers. She was in tears, yet nobody__  to help her.
There were a troop of Boy Scouts(童子军) on __ . Suddenly the Scout leader stood up and said, "Ma’am, I think we can help you." He then __  five minutes rearranging his group so that adequate space was __  for the family. The boys followed his directions cheerfully and without _ , and the mother's relief was obvious.
Kallie, however, was beginning to panic at the _   of not being next to me. I told her that there wasn’t anything I could do. __ , the man sitting next to the Scoutmaster, __  to me and asked, "Would you and your daughter like our seats?" __  to himself and the Scoutmaster. We traded seats and continued our trip, very much relieved to be together and watch the scenery from Kallie’s window seat.

D．comfortable

A．Immediately

B．turned around

D．turned away

问答题

简述教师的专业素养。