当x>1时，不等式x－2＋$\frac{1}{x-1}$≥a恒成立，则实数a的取值范围是  (　　)

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    Fear may be felt in the heart as well as in the head, according to a study that has found a link between the cycles of a beating heart and the chance of someone feeling fear.

    Tests on healthy volunteers found that they were more likely to feel a sense of fear at the moment when their hearts are contracting（收缩）and pumping blood around their bodies, compared with the point when the heartbeat is relaxed. Scientists say the results suggest that the heart is able to influence how the brain responds to a fearful event, depending on which point it is at in its regular cycle of contraction and relaxation.

    Sarah Garfinkel at the Brighton and Sussex Medical School said: “Our study shows for the first time that the way in which we deal with fear is different depending on when we see fearful pictures in relation to our heart.”

    The study tested 20 healthy volunteers on their reactions to fear as they were shown pictures of fearful faces. Dr Garfinkel said, “The study showed that fearful faces are better noticed when the heart is pumping than when it is relaxed. Thus our hearts can also affect what we see and what we don't see and guide whether we see fear.”

    To further understand this relationship, the scientists also used a brain scanner（扫描仪）to show how the brain influences the way the heart changes a person's feeling of fear.

    “We have found an important mechanism by which the heart and brain ‘speak' to each other to change our feelings and reduce fear,” Dr Garfinkel said.

    “We hope that by increasing our understanding about how fear is dealt with and ways that it could be reduced, we may be able to develop more successful treatments for anxiety disorders, and also for those who may be suffering from serious stress disorder.”

如果绿色植物被大量砍伐，大气中的二氧化碳就会急剧增加，并能引起温室效应，使地球环境不断恶化．这说明绿色植物能（　　）

    Last weekend, I went to Mark's new house nearby a forest for a little get-together. After lunch when I was chatting with him and his wife Cody, he asked me, “Hey Thoran, have you ever been to a secret spot?” Before I could even finish saying no, Cody and Mark were already at the door with their jackets on. And the next moment we were heading out into the forest with a camera, a fishing net and a plastic bucket（桶）.

    We walked through the forest along a path by a small river. Breathing the fresh air, we three talked and laughed all the way.

    “Hey! What are you guys doing?” Someone suddenly shouted from behind. Mark and Cody's eyes immediately widened, and without a word they started running. I had no choice but to follow them, getting my shoes wet and dirty with mud. We probably ran for about 10 minutes before Mark and Cody slowed down. I stopped to catch my breath and asked, “Who was that?”

    Mark replied, “The most annoying neighbor ever. If he caught up with us, there's no telling what could happen. He is always making fun of us. I dislike him.” We kept walking on for a few more minutes. Then a beautiful lake appeared before our eyes. “Wow! Amazing!” I shouted and could hardly hold back my excitement. The lake was large and the water was deep and blue, looking so peaceful with tall trees around it.

注意：

1）所续写短文的词数应为150左右；

2）至少使用5个短文中标有下划线的关键词语；

3）续写部分分为两段，每段的开头语己为你写好；

4）续写完成后，请用下划线标出你所使用的关键词语。

Paragraph 1:

    Looking around, we saw a rubber boat floating by the shore.

Paragraph 2:

    “Help! Help! Help!” I was so frightened and cried for help.