A parking sign reads: “No parking 8 a.m. to 6 p.m., Monday to Friday. Parking allowed at all times on weekends.” When may a driver park here?
- AOn a Friday at 9 a.m.
- BOn a Monday at 10 a.m.
- COn a Wednesday at 3 p.m.
- DOn a Saturday at noon
A parking sign reads: “No parking 8 a.m. to 6 p.m., Monday to Friday. Parking allowed at all times on weekends.” When may a driver park here?
An ambulance siren sounds higher as it comes towards you and lower as it moves away. This change in sound is called the Doppler effect. What is the Doppler effect, according to the passage?
When a hedgehog is frightened, it rolls into a tight ball. Its sharp spines then stick out in all directions, protecting its soft belly. What does a hedgehog do when it is frightened?
Washing hands with soap for at least 20 seconds removes many germs. Soap breaks up the oily layer that holds germs on the skin, and rinsing washes them away. What is the author’s main purpose?
“The cake looked perfect, but when Ben cut into it, the middle was still runny.” What can you infer?
“Jess studied the map carefully, then folded it and set off down the left-hand trail without hesitating.” What does “without hesitating” suggest?
The author writes: “In a survey, 80% of patients said they were satisfied with the clinic. However, only 10% of patients returned the survey.” What is the author suggesting?
“The new treatment is promising,” the researcher said, “but our trial included only 40 patients, all of them under 50. We cannot yet say whether it works for older adults.” What can you infer about the researcher’s view?
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