Most scientists now use the International System of measures, with meters for length, kilograms for 15, and seconds for time.
答案：(B) mass
kilograms for mass（公斤作為質量單位）與前後 meters for length（公尺為長度單位）、seconds for time（秒為時間單位）並列，形成國際單位制的三個基本量；distance／temperature／volume 皆不符合公斤所對應的物理量。
mass 這個字，你的印象大概是「大量、群眾」（mass media、the masses），不太會想到它在度量衡與物理裡就是「質量」。
答對率四成，但這一格靠並列結構就定得下來，不必猜。空格落在一串三個並列的組合裡：meters for length（公尺對長度）、kilograms for ______（公斤對什麼）、seconds for time（秒對時間）。三組的格式一模一樣，都是「單位 for 那個單位在量的東西」。既然公斤量的是質量，空格就必須填 mass。填進去讀成 with meters for length, kilograms for mass, and seconds for time。並列結構是克漏字裡最省力的一招：先數清楚 and 或逗號連的是哪幾樣，確認它們的格式相同，缺的那一格照著同一個格式補就好。
distance（距離）與 length 重複，而且距離的單位也是公尺不是公斤；temperature（溫度）的單位是度，這一篇開頭就講過廚房裡的溫度計；volume（體積）的單位是公升或量杯，開頭那句 measures for volume (measuring cups) 已經寫得很清楚。三個都是這一篇出現過的度量名稱，形態吻合，容易被順手選走。
mass（質量；大量）、the mass media（大眾媒體）、volume（體積；音量）、length（長度）、the International System of measures（國際單位制）、scales and weights（磅秤與砝碼）。
Measurements are needed in many everyday activities. In kitchens you will find measures for volume (measuring cups), mass (scales and weights), and temperature (cooking thermometers). Accurate measurements are 11 important for scientific experiments.
In a laboratory, make sure your measure meets your needs. 12 using any thermometer, double check that it covers the right temperature 13 for your activity or experiment. A garden thermometer, 14, will burst if you try to use it for boiling liquids.
There are different systems of measures. Most scientists now use the International System of measures, with meters for length, kilograms for 15, and seconds for time. If the measures in your experiment show other units, appropriate conversion tables for different systems may prove to be very useful.