28、下面短文中有10处语言错误。请在有错误的地方增加、删除或修改某个单词。

增加：在缺词处加一个漏字符号（∧），并在其下面写上该加的词。

删除：把多余的词用斜线（\）划掉。

修改：在错的词下划一横线，并在该词下面写上修改后的词。

注意：1．每处错误及其修改均仅限一词。

  2．只允许修改10处，多者（从第11处起）不计分。

   I like riding my bike．Though it is not very new, and it is my best friend．I find very convenient to go around by bike．Riding give me not only exercise but also pleasure．I use my bike mostly on summer when the weather is warm and dry．Therefore, it can be very unpleasant in winter when it is cold and rain is pouring down．It can also be very danger．Of course, I will be very careful on my bike． In fact, accidents are not the only problems．One day I went to school and come back to find his front wheel was missed．It was a long walk to the repairer’s shop．Now my bike is equipped with two strongly locks．

27、There was ____ time ____ I hated to go to school．

A．a; that           B．a; when          C．the; that               D．the; when

25、Here came ____ word that Obama was elected____ president of the USA．

A．a; the         B．/; the        C．the; /        D．/;/

23、Building a new school is one thing, while keeping it running smoothly is quite ______．

A．the other        B．another           C．neither           D．others

22、--The research on the new swine flu virus vaccine is challenging and demanding．Who do you think can do the job?

--____ my students have a try?

A．Shall                   B．Must         C．Will          D．May

21、When he bought the products in large quantities, he was angry to find they were _____ the samples given to him．

A．as not well as       B．as not good as       C．not so good as        D．not so well as

20、The first use of atomic weapons was in 1945 and their power ____ increased enormously ever since．

A．is          B．was         C．has been          D．had been