They don’t look too revolutionary, but you’d be surprised 20 they are capable of.
答案：(A) how much
語意「你會驚訝於它們的能力有多大」，how much they are capable of 表達程度；at that、what if（如果……會怎樣）、such as（例如）都不合。
本題大考中心未公布逐題答對率，以下不談數據，只談觀念。
四個選項長得完全不像，你會先讀中文意思去比對，覺得「你會很驚訝……」後面接什麼好像都行。其實這一格用不到語意，光看空格後面那串字缺了什麼就能定案。
把空格後面讀完：they are capable of——be capable of 的 of 後面應該接一個東西（be capable of sth 有能力做某事），但這裡 of 後面什麼都沒有，句子在這裡斷掉了。這個洞就是線索：空格要填的字必須自己跑進去補那個洞。how much 正好可以——它從 of 後面被提到最前面，整串 how much they are capable of 就成了一個名詞子句，意思是「它們的能耐有多大」。還原成直接問句更清楚：How much are they capable of?（它們有多大的能耐？）改成擺在動詞後面的說法時，語序回到主詞加動詞，就成了 how much they are capable of。這一招在克漏字裡反覆出現：先數空格後面那個子句缺不缺成分，缺什麼就找一個能補上去的字（同判準：91 年第 25 題、93 年第 18 題）。
what if（如果……會怎樣）：帶出的是一個假設的情境，後面要接完整的句子，而這裡的 of 還缺著東西。such as（例如）：後面接名詞用來舉例，接不了一個子句。at that（而且、還不只如此）：擺在句尾的慣用語，不能拿來引導後面的子句。
be capable of（有能力……）、be capable of doing sth（能夠做某事）、be surprised at（對……感到驚訝）、be surprised to V（很訝異地做……）、be able to V（能夠）、look revolutionary（看起來很有突破性）。
At times, it seems like there are not many things that we can give a student who has everything. But 16 that Christmas is just a few weeks away, 17 is a gift idea. Those who have an inclination for crazy technological advances aren't hard 18. One simple way is a few new items that might 19 life more enjoyable. They don't look too revolutionary, but you'd be surprised 20 they are capable of. The following is one of the items.
21 a student who is never on time, there is the new Projection Alarm Clock. Many ordinary clocks are hard to read early in the morning, deceiving students of the correct time, 22 causing them to be late for school. Through a projector, this attractive radio-alarm-clock is able to display the time onto a wall, ceiling, or anywhere 23. The benefits include an easier visibility of the time, and an alarm that gets increasingly louder 24 turned off. It won't magically transport a student to school on time every day, but it just might make 25 a little easier.