2. Oxygen has an atomic number of 8 and most commonly, a mass number of 16. Thus, what is the atomic mass of an oxygen atom?
(A) approximately 8 grams
(B) approximately 8 daltons
(C) approximately 16 grams
(D) approximately 16 daltons

23.某師依〈冰河〉這篇說明文設計了一道閱讀理解題目：「根據文章內容，說明你想去和不想去『冰河地區』的理由， 請各舉一個例子。」請問這是屬於 PIRLS閱讀理解四層次的哪一個層次？ (A)提取訊息 (B)推論訊息 (C)詮釋整合 (D)比較評估

24.如果老師想要以課文生字做「部首猜義」教學，下列哪位老師挑選的生字最適合？ (A)甲師：眥、眩、省、矍 (B)乙師：荒、芒、萬、墓 (C)丙師：早、時、昂、書 (D)丁師：然、焰、魚、榮

25.在國語文科的教學實施說明中，教師應靈活採用各種不同的教學策略，其中之一為「實作教學」，旨為以形成學生的聽說讀寫技能或善良價值等實際訓練為主，讓學生投入語文學習活動，發掘自我的真正感受和建立個人價值觀。請問下列教學活動何者屬於「實作教學」？ (A)專題寫作 (B)戲劇表演 (C)小組討論 (D)獨立閱讀

1. Darwin's finches, collected from the Galápagos Islands, illustrate which of the following? (A) mutation frequency (B) ancestors from different regions (C) adaptive radiation (D) the accuracy of the fossil record

3. Which of the following statements is true about buffer solutions? (A) They maintain a constant pH when bases are added to them but not when acids are added to them. (B) They maintain a constant pH when acids are added to them but not when bases are added to them. (C) They fluctuate in pH when either acids or bases are added to them. (D) They maintain a relatively constant pH when either acids or bases are added to them.

4. Which two functional groups are always found in amino acids? (A) carbonyl and amino groups (B) carboxyl and amino groups (C) amino and sulfhydryl groups (D) hydroxyl and carboxyl groups

5. Lactose, a sugar in milk, is composed of one glucose molecule joined by a glycosidic linkage to one galactose molecule. How is lactose classified? (A) as a hexose (B) as a monosaccharide (C) as a disaccharide (D) as a polysaccharide

6. Which of the following produces and modifies polysaccharides that will be secreted? (A) lysosome (B) mitochondrion (C) Golgi apparatus (D) peroxisome

7. Which of the following is true of osmosis? (A) Osmosis only takes place in red blood cells. (B) Osmosis is an energy-demanding or "active" process. (C) In osmosis, water moves across a membrane from areas of lower solute concentration to areas of higher solute concentration. (D) In osmosis, solutes move across a membrane from areas of lower water concentration to areas of higher water concentration.

8. A noncompetitive inhibitor decreases the rate of an enzyme reaction by ________.(A) binding at the active site of the enzyme (B) changing the shape of the enzyme's active site (C) changing the free energy change of the reaction (D) acting as a coenzyme for the reaction