硫化氢中毒的症状及急救办法？
参考答案：
症状：根据浓度不同，可发生各种症状，人吸入低浓度的硫化氢，会出现喉痒、咳嗽、胸部有压迫感、眼睛怕光流泪等，这些症状有时在脱离接触数小时后出现，病人常感到灯光周围有有色光环，这是角膜水肿的一种表现；人吸入高浓度的硫化氢时，可在数秒钟到数分钟后既可发生头昏、心跳加快，甚至意识模糊、昏迷、象触电一样昏倒，很快死亡。急救方法：
（1）救护者进入毒区抢救中毒病人必须带防毒面具；
（2）对中毒病人，迅速转移到空气新鲜地方，有窒息症状时应进行人工呼吸，在病人没有好转之前，人工呼吸不可轻易放弃；
（3）迅速向公司医院打急救电话，并报告调度；
（4）医生赶到后，协助医生抢救。
摘录信息（共5小题；每小题2分，满分10分） 阅读下面短文，根据所读内容在文后第56至第60小题的空格里填上适当的单词或短语，并将答案转写到答题卡上。 注意：每空不超过3个单词。 Thinking of starting to play tennis? Tennis is a great sport that requires mental preparation and physical agility(敏捷). The first part of being able to play the game properly is understanding the rules, and in this article, we’ll be discussing what are commonly agreed upon as the official rules of tennis. The rules of tennis are quite simple even though the game itself is complex. Tennis should be played on a court that is built according to certain requirements. The court should be 78 feet long. For a singles match, the court should be 27 feet in width, and for doubles matches, the court’s width should be 36 feet. The net’s height should be 3 and a half feet. Service lines should be placed 21 feet each side of the net. Opponent stand on opposite sides of the court. The player who delivers the ball to start the point is called the server. The player who stands opposite and cross-court from the server is the receiver. The right to serve, receive, choose your side, or give the opponent these choices is decided by a toss(投掷) of a coin. Once the choice of the sever or receiver is done, the first player chooses which side to start. Tennis is a special game; it has special names given to the various points awarded. A score of zero is called out by saying “Love”, and from there, the points go to 15, 30 and 40. If both players get a score of 40, the game must become a ti  e-breaker, and a 40-40 score is announced by saying “Deuce”. In a “Deuce” situation, if a player gets a point, he is said to have “Advantage”. If a player with an “Advantage” gets another point, the game is over. If a player gets a point while the other has “Advantage”, the score is reset to “Deuce”.Title: 56._________________ of tennis
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