高中 解答

從「attitude」一字共8個字母中，任取4個字母排成一列，共有____________種排列數。

某地區 12 歲以上人口中，吸菸的比例為 28 ％。今將 12 歲以上人口區分為中老年、青壯年及青少年三類，所占比例各為 30 ％、45 ％及 25 ％。已知中老年與青壯年人口中吸菸的比例各為 25 ％與 30 ％，試問青少年人口中吸菸的比例為多少？

班上共 46 人登記要買數學家傳記做閱讀賞析課程，登記要買高斯傳的有 30 人，買高斯傳和尤拉傳的有 15 人，若已知兩者皆不買的有 5 人，則買尤拉傳的共有幾人？

高一期中考某班數學成績，中位數74分，算術平均數75.2分，全距82分，標準差21分。今該班發現某生成績應為76分誤登記為86分，試問上述統計量哪些維持不變？

袋中有1至24號的球各1個（共24個球），今自其中任取2球，則在球球號和為28的條件下，2球號均為奇數的機率為何

第二次期中考數學的平均分數偏低，故老師將全校分數加25分後，則下列哪一個選項是正確的？

同時擲兩枚均勻硬幣，連續擲兩次，問至少有一次出現一正面一反面的機率為多少？

The engineer ____ the design to improve the performance of the system.

Astronauts must undergo strict ____ training before going into space.

Exercising helps improve blood ____ in your body.

The scenery in the mountains is so beautiful that it's ____ of this world.

Mark has a chance to _______ in the National High School Games.

I like any flavor of ice cream, but chocolate _______.

Running on a treadmill is a good way to work ____ a sweat.

The firefighters worked for hours to keep the fire under .

Parents often make a lot of ____ for their children's future.

The citizens _______ this mayor due to his integrity.

Traveling across Europe really broadened his ____.

Maria ____ aside her work to see why her baby was crying.

Sandy was ____ on the video game and forgot to eat her dinner.

The students will ____ the topic in detail in the next chapter.

Ben adopted an effective ____ of studying and got good grades.

It is important to carefully ____ an essay before handing it in.

Most of the speakers at the conference are experts in the ____ of space travel.