SAT Reading & Writing Mock Tests

Read the following sentence: "The team of researchers, along with their lab assistants, _______ conducting experiments for the past six months." Which choice completes the sentence so that the subject and verb agree? a) has been b) have been c) has d) is

The following sentence is part of a paragraph about renewable energy: (1) Wind energy has grown rapidly in recent years as technology has improved. (2) ______ (3) Offshore wind farms, in particular, can capture stronger and more consistent winds than their onshore counterparts, making them increasingly attractive to energy developers. Which choice best fills blank (2) to create a logical connection?

In this excerpt from an article about artificial intelligence in healthcare: "Artificial intelligence systems can now diagnose certain skin cancers with accuracy comparable to that of board-certified dermatologists. A study at Stanford University demonstrated that an AI algorithm correctly identified malignant melanoma in eighty-eight percent of cases, compared to eighty-six percent for human doctors. ______ these systems cannot yet replace doctors entirely, as they lack the ability to consider a patient's full medical history and to communicate empathetically with patients." Which choice completes the text with the most logical transition? a) NO CHANGE (While) b) Because c) Since d) As

In this passage from a science magazine: "CRISPR-Cas9 gene editing has revolutionized biological research by allowing scientists to modify DNA sequences with unprecedented precision. However, the technology raises ethical questions, particularly regarding germline editing, which changes genes in ways that can be passed down to future generations." What is the author's primary purpose in presenting both sentences?

Neither the students nor the teacher ______ aware of the schedule change until the announcement was posted online.

Read the following passage about the development of antibiotics: "Alexander Fleming discovered penicillin in 1928 when he noticed that a mold called Penicillium had killed bacteria in a petri dish. However, it was not until 1938 that Howard Florey and Ernst Chain developed a method to purify and mass-produce penicillin. During World War II, penicillin saved countless soldiers' lives by treating infected wounds." Which finding, if true, would most directly challenge the passage's implication about Fleming's role?

Choose the sentence that uses correct punctuation. a) The researchers collected data; from three different cities: New York, Los Angeles, and Chicago. b) The researchers collected data from three different cities: New York, Los Angeles, and Chicago. c) The researchers collected data, from three different cities: New York, Los Angeles, and Chicago. d) The researchers collected data from three different cities, New York, Los Angeles, and Chicago.

In this passage about environmental science: "Deforestation in the Amazon basin releases approximately 1.5 billion tons of carbon dioxide annually, making Brazil one of the world's largest contributors to greenhouse gas emissions. The loss of trees also disrupts regional rainfall patterns, potentially turning parts of the rainforest into savanna." What is the primary purpose of this passage?