阅读理解(入学考试)
方法
- 先读问题,这样你就知道要找什么。
- 快速浏览短文,了解其主题和要点;第一句或最后一句往往会点明。
- 回到能回答该问题的那几行原文。
- 对于推断题,选择线索最有力支持的选项,而不是推得更远的选项。
- 对于标签和表格,应用所有适用于该情形的规则,并仔细完成小的计算。
公式表、每个专题的关键方法步骤和 16 道练习题,完整解答附在最后。
“The word ‘biology’ comes from two Greek words: ‘bios’, meaning life, and ‘logos’, meaning study.” What does “biology” mean, according to the passage?
The author writes: “Since the hospital started a quiet hour from 2 to 3 p.m., patients report sleeping better. However, the survey asked only patients on one ward, during one week.” What does the second sentence do?
计算 2 1/8 + 1 1/2。点击最简形式的答案。
解出 x:3(x − 3) = 6x − 45。
受精最常发生在哪里?
刺伤切断了 T10 水平脊髓的左半侧。损伤平面以下预期会出现哪种功能丧失模式?
既然动作电位是"全或无"的,神经元如何传递更强的刺激?
为什么胎儿血红蛋白对氧的亲和力高于成人血红蛋白?
A person catches chickenpox once and does not usually become ill with it again. Why?
Ignoring crossing over, how many different combinations of chromosomes can one person's gametes have because of independent assortment?
水的摩尔质量是多少(H = 1 g/mol,O = 16 g/mol)?
Hydrogen peroxide fizzes when poured on a cut because an enzyme in blood breaks it down. What gas is produced, and what type of reaction is it?
Choose the correct verb: “The number of applicants ___ increased this year.”
Choose the correct verb: “Ten dollars ___ too much for a cup of coffee.”
Choose the meaning of the word in bold: “The patient had a seizure in the waiting room.”
Choose the meaning of the word in bold: “The weakness was ipsilateral to the injury.”
答案: D · The study of life
“Bios” means life and “logos” means study, so biology is the study of life.
答案: C · It limits how far the result can be applied.
The second sentence notes that the evidence comes from one ward over one week, so the result may not apply generally.
答案: 3 5/8
分数的加减:分母必须相同。求出最小公分母(LCD),把每个分数的分子分母同乘同一个数,改写成以它为分母的分数,然后只对分子做加减。分子分母同除以它们的最大公因数来约分,并把假分数写成带分数。
8 和 2 的最小公倍数是 8。
答案: x = 12
解方程:对等式两边做同样的操作,直到 x 单独在一边。按相反的顺序撤销运算:先撤销加法或减法,再撤销乘法或除法。用分配律 a(x + b) = ax + ab 去掉括号,并把含 x 的项合并到一边。把答案代回去检验。
答案: C · 输卵管壶腹部
受精通常发生在输卵管壶腹部。胚胎随后移行到子宫着床。
答案: A · 左侧无力和本体感觉丧失,右侧痛觉和温度觉丧失
在布朗-塞卡综合征中,皮质脊髓束和后索在同侧丧失,而脊髓丘脑束在进入处附近交叉,因此出现对侧痛觉和温度觉丧失。
答案: B · 更频繁地发放动作电位
刺激强度由动作电位的频率和被募集的神经元数量编码,而不是由其幅度编码。
答案: A · 它与 2,3-BPG 的结合较弱
HbF 的 γ 链与 2,3-BPG 结合很差,因此解离曲线左移。这使胎儿血液能在胎盘中从母体血液中获取氧气。
答案: B · Memory cells give a faster, stronger response the next time
After the first infection, memory B and T cells remain. On a second exposure they respond much faster and more strongly, so the virus is cleared before it causes illness.
答案: D · 2²³, about 8 million
Each of the 23 homologous pairs can orient in two ways at metaphase I, giving 2 × 2 × ... = 2²³ ≈ 8.4 million combinations. Crossing over adds even more variation.
答案: A · 18 g/mol
2 × 1 + 16 = 18 g/mol。如果漏掉第二个氢,会得到 17。
答案: C · Oxygen, in a decomposition reaction
The enzyme catalase catalyses 2H₂O₂ → 2H₂O + O₂. One compound breaking into simpler substances is decomposition, and the bubbles are oxygen.
答案: B · has
“The number of …” refers to one number, so it is singular. “A number of applicants have applied” would be plural.
答案: C · is
An amount of money, time or distance treated as a single quantity takes a singular verb: “Ten dollars is too much.”
答案: B · A sudden burst of abnormal brain activity
A seizure is a sudden surge of electrical activity in the brain that can cause shaking or loss of awareness.
答案: B · On the same side
Ipsilateral means on the same side of the body; contralateral means on the opposite side.
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