23.Aluminum remained unknown until the nineteenth century, because nowhere in nature it is found (A) (B) free, owing to its always being combined with other elements, most commonly with oxygen, (C) for which it has a strong affinity. (D)

25.The giant panda is believed to have such a high degree of genetic diversity – about twice as much (A) (B) as humans – that there is a good chance of survival despite of its small population size. (C) (D) Ⅲ. 閱讀測驗：第 26 – 50 題，每題均有四個選項，請分別根據各篇文章之原意，選出最適當一個選項。 ▲ 閱讀下文，回答第 26 – 30 題 Stop taking this drug and call your doctor at the first sign of allergy or sensitivity. Symptoms include fever, rash, fatigue, nausea, vomiting, diarrhea, abdominal pain, sore throat, difficulty breathing, and coughing. Some patients who experienced a hypersensitivity reaction were initially thought to have a respiratory infection. If you continue to take abacavir and are allergic to it, more severe reactions including a life-threatening drop in blood pressure could develop in hours. Abacavir is not a cure for HIV. People taking the drug may still develop opportunistic infections and other conditions associated with HIV infection. The long-term effects of abacavir are not known. Report anything unusual to your doctor. It is very important for you to take abacavir exactly as prescribed. If you forget to take a dose and remember within 2 to 3 hours, take the medication. If you forget until it is almost time for your next dose, skip the forgotten dose and continue with your regular schedule. Remember, every dose of any HIV medication you forget or skip can make it more difficult for the drugs to do their job and can also lead to the development of HIV resistant to abacavir.

23.Aluminum remained unknown until the nineteenth century, because nowhere in nature it is found
(A)
(B)
free, owing to its always being combined with other elements, most commonly with oxygen,
(C)
for which it has a strong affinity.
(D)

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23.Aluminum remained unknown until the nineteenth century, because nowhere in nature it is found(A)(B) free, owing to its always being combined with other elements, most commonly with oxygen,(C) for which it has a strong affinity.(D)

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23.Aluminum remained unknown until the nineteenth century, because nowhere in nature it is found
(A)
(B)
free, owing to its always being combined with other elements, most commonly with oxygen,
(C)
for which it has a strong affinity.
(D)