阅读理解 'Go for it!' The expression 'Go for it!' is a way of encouraging someone to try something. 'Go for it!' means you should not worry about failure or be too careful. You should take a chance and be brave. 'Go for it!' gets its name from football. But it is not the football played in most countries such as England, France or Japan, but the kind of football played in the United States and Canada. One of the most exciting times in football comes when a team has failed, after three tries, to move the ball forward ten yards. The team must make a very important decision. The conservative(保守的)choice is to kick the ball and accept temporary defeat (暂时失败)in order to get a good position for your team the next time it gets the ball. The more exciting choice, however, is to try a fourth and final time to get the remaining yards needed. People now are certain to shout their advice.  Some will shout,  'Kick the ball!'  But others will encourage the team to take a chance. 'Go for it!' they will shout loudly. In the 1980's, people began using this expression in many kinds of situations(情形) to encourage someone to act bravely. There is no guarantee(保证) that the action you 'Go for it!' will succeed. But when you decide to go for it, you only consider your action. That is the chance you can take. You put your fears behind. You choose courage over safety. You hold your breath and go for it. 1. What does 'Go for it!' mean? A. You should go straight on. B. You should take a chance and be brave. C. You should go to school and ask teachers for help. D. You should be very careful. 2. The expression'Go for it!' comes from _____________ football. A. English B. French C. Japanese D. American 3. According to the passage, when we decide to go for it, we only consider _____________. A. safety B. action C. result D. success 4. In which of the following situations should we use the expression'Go for it!' now? A. We decide to avoid(逃避) trouble or danger for the future. B. We try to improve our English for better education. C. We need to make a quick decision at the last moment D. We have to make a choice between success and failure.