[填空题]Going to the beach is many Americans’favorite activity. In the area near New York City, nine million people used to go to the beach every summer. They went swimming in the ocean without giving a thought to what was underwater. But those days are long gone.
In the summer of 1988. the government was forced to shut down beaches all over America. Many of the beaches had to be closed because garbage from hospitals was found in the water. The garbage included glass bottles with samples of blood, and people were afraid they might get AIDS from the blood. Where the medical garbage came from is anybody’s guess. At some beaches, sewage (生活污水) was found in the water.
Americans were shocked by this state of affairs. They had long taken for granted that oceans were big enough to stay clean, even if garbage and sewage were dumped into them. People didn’t think of the underwater garbage because it was out of sight.
Some of the most polluted waters still look beautiful at first gl

[填空题]Going to the beach is many Americans’favorite activity. In the area near New York City, nine million people used to go to the beach every summer. They went swimming in the ocean without giving a thought to what was underwater. But those days are long gone.
In the summer of 1988. the government was forced to shut down beaches all over America. Many of the beaches had to be closed because garbage from hospitals was found in the water. The garbage included glass bottles with samples of blood, and people were afraid they might get AIDS from the blood. Where the medical garbage came from is anybody’s guess. At some beaches, sewage (生活污水) was found in the water.
Americans were shocked by this state of affairs. They had long taken for granted that oceans were big enough to stay clean, even if garbage and sewage were dumped into them. People didn’t think of the underwater garbage because it was out of sight.
Some of the most polluted waters still look beautiful at first gl

[填空题] Many teachers watch and listen while speaking activities are taking place. They note down things that seemed to 【B1】______ well and times when students couldn’’t make themselves 【B2】______ or made important mistakes. When the activity has finished, they 【B3】______ ask the students how they thought it before giving their own feedback. They may say that they liked the way Student A said this and the 【B4】______ Student B was able to disagree 【B5】______ her. They will then say that they did hear one or two mistakes and they can then either discuss them with the class, write them on the board 【B6】______ give them individually to the students 【B7】______. In each case, they will ask the students to see if they can 【B8】______ the problem and correct it. As with any kind of correction, it is important not to single students 【B9】______for particular criticism. Many teachers 【B10】______ with the mistakes they heard 【B11】 ______saying who made them. Of course, there are no hard and f
A. A．and
B．but
C．or
D．nor