[2026] PTE Academic Reading - Fill in the Blanks (Dropdown)
Fill in the Blanks (Dropdown) #0123
Fill in the Blanks (Dropdown)
Fill in the Blanks (Dropdown)
Below is a text with blanks. Click on each blank, a list of choices will appear. Select the appropriate answer choice for each blank.
Dark matter is an invisible substance that is thought to account for approximately 85% of the matter in the universe. Unlike ordinary matter, it does not light or energy, making it impossible to observe directly with traditional telescopes. Scientists have its existence primarily through its gravitational effects on visible stars and galaxies. Without the presence of dark matter, many galaxies would likely because they do not contain enough visible mass to stay together. Despite decades of research, the actual of dark matter remains one of the most profound mysteries in modern physics. Future experiments conducted in deep underground laboratories aim to detect dark matter particles and clarify their role in cosmic evolution.
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Highlights
ID:pt4373730726
Test No:#0123
Difficulty:Hard
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