题目内容：

    A couple of weeks ago, my grandfather was explaining his favorite expression. "Nothing is ever easy? The following day, as I tried to complete my day's work, I happened to notice a bumblebee（大黄蜂）on the skylight（天窗）.The skylight was particularly high up, but I thought removing the bee would take no more than five minutes. An hour later, the bee still remained. All that had changed was that the living room was a mess and that 1 was dizzy from looking up into the sunlight. I did not expect to waste an hour on an insect so tiny, but by doing so, I understood what my grandfather meant.

It is not only time that we tend to underestimate — we don’t account for unexpected costs. We often imagine what can work in our favor but we seldom think of all the negative things that could a fleet us. However, it is important to remember that your day or week or year might nor go as planned, and that is completely normal. It is perfectly acceptable to feel challenged — even at a task you thought was simple — because that is part of life.

If you can accept that nothing will ever be easy, then life might seem slightly more manageable. In middle school. I thought high school might be easier because I could choose the classes I wanted to take. In high school I thought college might be easier because I could have a schedule（计划）best suited for myself. Yet each time, I was both wrong and disappointed. After accepting that school wouldn't（and shouldn't）be easy. I found myself with a more positive altitude and improved results.

Of course, there should be preparations made to account tor expenses or time. Doing so can only help you accomplish your goals in a better way. However, there is no need to beat ourselves up when something stands in our path. Maybe we cannot see a bee coming our way, but we can always give ourselves the extra time to catch it.

1.Why did the author mention his experience of removing a bee?

A.To share something unforgettable with us.

B.To lead us to what the author learned from it.

C.To show the unexpected costs it caused.

D.To tell us how easy it is to waste our rime.

2.Why do things often tum out to be different from what we expect?

A.We often don't take lime seriously.

B.We tend not to have enough money.

C.Unexpected things can happen.

D.It is easy to feel challenged.

3.According to the text, what does the underlined phrase "beat ourselves up" mean?

A.lo hit or kick ourselves hard, many times

B.to blame ourselves too much

C.to encourage ourselves to work hard

D.to give up ourselves

4.What is the author's purpose of writing this article?

A.To encourage people to make greater efforts.

B.To explain how to make preparations.

C.To tell us what to do when something gets in our way.

D.To persuade us not to expect things to be easy.