Lembaran formula, langkah kaedah utama untuk setiap topik dan 16 soalan latihan, dengan penyelesaian penuh di bahagian belakang.
The author says: “Some argue that homework is a waste of time. Yet research shows that a moderate amount of homework can improve test scores for older students.” How does the author respond to the argument against homework?
“When Aunt Rose saw the broken vase, she said, ‘Well, I never liked that vase anyway,’ and gave her nervous nephew a wink.” Why did Aunt Rose most likely say this?
Graf garis menunjukkan suhu luar setiap 2 jam, dari jam 0 hingga jam 10. Berapakah kenaikan terbesar Δ antara dua bacaan bersebelahan (berjarak 2 jam)?
Pecahan atau nombor bercampur manakah dalam bentuk termudah yang sama dengan 199.5%? Klik padanya.
Struktur manakah yang menghubungkan telinga tengah dengan nasofaring?
Struktur manakah yang terdapat dalam mediastinum posterior?
Apakah fungsi utama surfaktan pulmonari?
Penyesuaian manakah yang berkembang selama beberapa hari hingga minggu di altitud tinggi?
Why is DNA replication called semiconservative?
After a long course of broad-spectrum antibiotics, a patient develops severe diarrhoea caused by Clostridioides difficile. What is the most likely reason?
Which measurement has three significant figures?
Making ammonia (N₂ + 3H₂ ⇌ 2NH₃) is exothermic. A low temperature would give a higher yield, yet factories use a moderately high temperature. Why?
Which spelling is correct for the number that comes after eleventh?
Choose the correct verb for formal (especially American) English: “The policy requires that every visitor ___ a mask.”
Choose the meaning of the word in bold: “Hearing loss is prevalent among older adults.”
Choose the word that best completes the sentence: “Burning on urination and frequency are ___ of a urinary tract infection.”
Jawapan: D · By presenting research that supports some homework
The author counters the claim with research evidence that moderate homework can help older students.
Jawapan: C · To put her nephew at ease
The wink and her light remark suggest she wanted to calm her nervous nephew rather than scold him.
Jawapan: Δ = 4 °C
Membaca carta dan jadual: baca tajuk, kategori dan skala dahulu. Pada carta bar atau graf garis, ikuti puncak bar atau titik melintang ke paksi mencancang; setiap garis grid ialah satu langkah skala. Carta pai menunjukkan bahagian daripada keseluruhan: sektor p% mewakili p% daripada jumlah dan mempunyai sudut p% daripada 360°.
Jawapan: 1 199/200
Pecahan, perpuluhan dan peratus ialah tiga cara menulis nombor yang sama. Pecahan → perpuluhan: bahagikan pengangka dengan penyebut. Perpuluhan → peratus: darabkan dengan 100 (alihkan titik dua tempat ke kanan). Peratus → perpuluhan: bahagikan dengan 100. Perpuluhan → pecahan: tulis digit di atas 10, 100 atau 1000 (satu sifar bagi setiap tempat perpuluhan) dan permudahkan.
Jawapan: C · Tiub auditori (Eustachius)
Tiub auditori menyamakan tekanan udara pada kedua-dua belah gegendang telinga. Pada kanak-kanak ia lebih pendek dan lebih mendatar, yang memudahkan jangkitan telinga tengah.
Jawapan: D · Esofagus
Mediastinum posterior mengandungi esofagus, aorta menurun, vena azigos dan duktus toraks. Jantung dan aorta menaik berada dalam mediastinum tengah; timus berada dalam mediastinum superior dan anterior.
Jawapan: D · Untuk mengurangkan tegangan permukaan dalam alveoli
Surfaktan, yang dihasilkan oleh sel alveolar jenis II, merendahkan tegangan permukaan supaya alveoli tidak runtuh dan paru-paru lebih mudah dikembangkan.
Jawapan: D · Paras eritropoietin yang lebih tinggi dan lebih banyak sel darah merah
Hipoksia merangsang EPO dan penghasilan sel darah merah, menaikkan kapasiti membawa oksigen. Hiperventilasi menyebabkan alkalosis, yang diimbangi oleh buah pinggang dengan merembeskan bikarbonat.
Jawapan: A · Each new DNA molecule has one old strand and one new strand
Each original strand acts as a template. The two resulting molecules each contain one parent strand and one newly made strand.
Jawapan: C · The antibiotics killed normal gut bacteria that kept C. difficile in check
Broad-spectrum antibiotics disturb the normal gut flora. Without this competition, C. difficile, which is often resistant, can multiply and release toxins that damage the bowel.
Jawapan: C · 0.00560
In 0.00560 the leading zeros are placeholders, while 5, 6 and the final 0 are significant. 0.0056 and 56 have two significant figures and 5.0006 has five.
Jawapan: C · At low temperatures the reaction is too slow to be useful
Lowering the temperature favours ammonia at equilibrium, but makes the reaction very slow. A compromise temperature with an iron catalyst gives an acceptable yield quickly. High pressure is also used to favour ammonia.
Jawapan: A · twelfth
“Twelfth” is spelled t-w-e-l-f-t-h. The v changes to f, and the f is often not clearly pronounced.
Jawapan: B · wear
The subjunctive uses the base form of the verb, even with a singular subject: “that every visitor wear”. British English often uses “should wear” instead, but US-style exams expect the subjunctive.
Jawapan: D · Common
Prevalent means widespread or common in a particular group or area.
Jawapan: C · indicative
Indicative means serving as a sign of something.
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