46 What is the main idea of the whole text?
(A) Satellite images of the ebb and flow of plant life show the earth breathing.
(B) Satellite images show that phytoplankton absorbs CO₂ from the atmosphere like other plants on earth.
(C) Satellite images will prove to us that plant life in the ocean causes rising CO₂ levels and global warming.
(D) Satellite images of plant life activities can help predict how plants will respond to rising CO₂ levels.

42 (A) examples (B) exports (C) exclusion (D) excommuncation

43 (A) in (B) with (C) for (D) to

44 (A) rather that (B) such that (C) fewer than (D) more than

45 (A) comparison (B) linkage (C) difference (D) hostility

47 What do the green areas of the satellite images indicate? (A) The areas do not have any plants. (B) The areas are filled with plants. (C) The areas are filled with lakes. (D) The areas are filled with overabundant plants.

48 How does one know that the earth is breathing? (A) Because satellite images show no change in the green areas. (B) Because satellite images show that the plants’ breathing activities happen underwater. (C) Because satellite images show that plants are absorbing CO2 and producing oxygen. (D) Because satellite images show overuse of fossil fuels.

49 According to the passage, which statement about the phytoplankton is true? (A) These tiny microscopic plants underwater do not change the weather. (B) These tiny microscopic underwater plants migrated from the atmosphere. (C) These tiny microscopic underwater plants are at the top of the food chain. (D) These tiny microscopic plants flourished underwater over the past three years.

50 What can scientists use these images for? (A) To prove that phytoplankton multiplies in warm waters. (B) To predict possible plant responses to rising global CO2 levels. (C) To predict that global plants will flourish during the following years. (D) To prove that breathing phytoplankton leads to global warming

1.下列何者不能檢測血紅素Hb F？ (A)超活染色（supravital stain） (B)血紅素電泳 (C)high-performance liquid chromatography分析 (D)鹼性變性法（alkaline denaturation method）

2.下列何者未參與heme的合成？ (A)succinyl CoA (B)Fe (C)α globin (D)protoporphyrin